diff --git a/amgprec/impl/amg_c_hierarchy_bld.F90 b/amgprec/impl/amg_c_hierarchy_bld.F90
index 8b04b474..37e009ea 100644
--- a/amgprec/impl/amg_c_hierarchy_bld.F90
+++ b/amgprec/impl/amg_c_hierarchy_bld.F90
@@ -94,7 +94,8 @@ subroutine amg_c_hierarchy_bld(a,desc_a,prec,info,cpymat)
   type(amg_c_onelev_type), allocatable :: tprecv(:)
   logical :: cpymat_
   integer(psb_ipk_)  :: debug_level, debug_unit
-  character(len=20)  :: name, ch_err
+  character(len=20)  :: name
+  character(len=40)  :: ch_err
   integer(psb_ipk_), save  :: idx_bldtp=-1, idx_matasb=-1
   logical, parameter :: do_timings=.false.
 
@@ -333,9 +334,10 @@ subroutine amg_c_hierarchy_bld(a,desc_a,prec,info,cpymat)
          & prec%precv(i-1)%base_desc,&
          & ilaggr,nlaggr,op_prol,prec%ag_data,info)
     if (do_timings) call psb_toc(idx_bldtp)
-    if (info /= psb_success_) then 
+    if (info /= psb_success_) then
+      write(ch_err,'(a,i7)') 'Map bld fail @ level ',i
       call psb_errpush(psb_err_internal_error_,name,&
-           & a_err='Map build')
+           & a_err=ch_err)
       goto 9999
     endif
 
@@ -406,7 +408,7 @@ subroutine amg_c_hierarchy_bld(a,desc_a,prec,info,cpymat)
            & coarse_sm,coarse_sm2,info)
       if (newsz < i) then
         !
-        ! We are going back and revisit a previous leve;
+        ! We are going back and revisit a previous level;
         ! recover the aggregation.
         !
         ilaggr = prec%precv(newsz)%linmap%iaggr
@@ -419,8 +421,9 @@ subroutine amg_c_hierarchy_bld(a,desc_a,prec,info,cpymat)
            & ilaggr,nlaggr,op_prol,info)
       if (do_timings) call psb_toc(idx_matasb)      
       if (info /= 0) then 
+        write(ch_err,'(a,i7)') 'Mat asb fail @ level ',newsz
         call psb_errpush(psb_err_internal_error_,name,&
-             & a_err='Mat asb')
+             & a_err=ch_err)
         goto 9999
       endif
       exit array_build_loop
@@ -432,8 +435,9 @@ subroutine amg_c_hierarchy_bld(a,desc_a,prec,info,cpymat)
       if (do_timings) call psb_toc(idx_matasb)      
     end if
     if (info /= psb_success_) then 
+      write(ch_err,'(a,i7)') 'Mat asb fail @ level ',i
       call psb_errpush(psb_err_internal_error_,name,&
-           & a_err='Map build')
+           & a_err=ch_err)
       goto 9999
     endif
     if (i<iszv) call prec%precv(i)%update_aggr(prec%precv(i+1),info)
diff --git a/amgprec/impl/amg_c_smoothers_bld.f90 b/amgprec/impl/amg_c_smoothers_bld.f90
index 4bd1aa65..3f425349 100644
--- a/amgprec/impl/amg_c_smoothers_bld.f90
+++ b/amgprec/impl/amg_c_smoothers_bld.f90
@@ -101,7 +101,8 @@ subroutine amg_c_smoothers_bld(a,desc_a,prec,info,amold,vmold,imold)
   real(psb_spk_)     :: mnaggratio
   integer(psb_ipk_)   :: coarse_solve_id
   integer(psb_ipk_)   :: debug_level, debug_unit
-  character(len=20)   :: name, ch_err
+  character(len=20)   :: name
+  character(len=40)   :: ch_err
 
   info=psb_success_
   err=0
@@ -296,7 +297,7 @@ subroutine amg_c_smoothers_bld(a,desc_a,prec,info,amold,vmold,imold)
     call prec%precv(i)%bld(info,amold=amold,vmold=vmold,imold=imold,ilv=i)
 
     if (info /= psb_success_) then
-      write(ch_err,'(a,i7)') 'Error @ level',i
+      write(ch_err,'(a,i7)') 'Error @ level ',i
       call psb_errpush(psb_err_internal_error_,name,&
            & a_err=ch_err)
       goto 9999
diff --git a/amgprec/impl/amg_d_hierarchy_bld.F90 b/amgprec/impl/amg_d_hierarchy_bld.F90
index de45ffa7..452a404f 100644
--- a/amgprec/impl/amg_d_hierarchy_bld.F90
+++ b/amgprec/impl/amg_d_hierarchy_bld.F90
@@ -94,7 +94,8 @@ subroutine amg_d_hierarchy_bld(a,desc_a,prec,info,cpymat)
   type(amg_d_onelev_type), allocatable :: tprecv(:)
   logical :: cpymat_
   integer(psb_ipk_)  :: debug_level, debug_unit
-  character(len=20)  :: name, ch_err
+  character(len=20)  :: name
+  character(len=40)  :: ch_err
   integer(psb_ipk_), save  :: idx_bldtp=-1, idx_matasb=-1
   logical, parameter :: do_timings=.false.
 
@@ -333,9 +334,10 @@ subroutine amg_d_hierarchy_bld(a,desc_a,prec,info,cpymat)
          & prec%precv(i-1)%base_desc,&
          & ilaggr,nlaggr,op_prol,prec%ag_data,info)
     if (do_timings) call psb_toc(idx_bldtp)
-    if (info /= psb_success_) then 
+    if (info /= psb_success_) then
+      write(ch_err,'(a,i7)') 'Map bld fail @ level ',i
       call psb_errpush(psb_err_internal_error_,name,&
-           & a_err='Map build')
+           & a_err=ch_err)
       goto 9999
     endif
 
@@ -406,7 +408,7 @@ subroutine amg_d_hierarchy_bld(a,desc_a,prec,info,cpymat)
            & coarse_sm,coarse_sm2,info)
       if (newsz < i) then
         !
-        ! We are going back and revisit a previous leve;
+        ! We are going back and revisit a previous level;
         ! recover the aggregation.
         !
         ilaggr = prec%precv(newsz)%linmap%iaggr
@@ -419,8 +421,9 @@ subroutine amg_d_hierarchy_bld(a,desc_a,prec,info,cpymat)
            & ilaggr,nlaggr,op_prol,info)
       if (do_timings) call psb_toc(idx_matasb)      
       if (info /= 0) then 
+        write(ch_err,'(a,i7)') 'Mat asb fail @ level ',newsz
         call psb_errpush(psb_err_internal_error_,name,&
-             & a_err='Mat asb')
+             & a_err=ch_err)
         goto 9999
       endif
       exit array_build_loop
@@ -431,9 +434,11 @@ subroutine amg_d_hierarchy_bld(a,desc_a,prec,info,cpymat)
            & ilaggr,nlaggr,op_prol,info)
       if (do_timings) call psb_toc(idx_matasb)      
     end if
+
     if (info /= psb_success_) then 
+      write(ch_err,'(a,i7)') 'Mat asb fail @ level ',i
       call psb_errpush(psb_err_internal_error_,name,&
-           & a_err='Map build')
+           & a_err=ch_err)
       goto 9999
     endif
     if (i<iszv) call prec%precv(i)%update_aggr(prec%precv(i+1),info)
diff --git a/amgprec/impl/amg_d_smoothers_bld.f90 b/amgprec/impl/amg_d_smoothers_bld.f90
index ecdcd93b..27ff39e0 100644
--- a/amgprec/impl/amg_d_smoothers_bld.f90
+++ b/amgprec/impl/amg_d_smoothers_bld.f90
@@ -101,7 +101,8 @@ subroutine amg_d_smoothers_bld(a,desc_a,prec,info,amold,vmold,imold)
   real(psb_dpk_)     :: mnaggratio
   integer(psb_ipk_)   :: coarse_solve_id
   integer(psb_ipk_)   :: debug_level, debug_unit
-  character(len=20)   :: name, ch_err
+  character(len=20)   :: name
+  character(len=40)   :: ch_err
 
   info=psb_success_
   err=0
@@ -296,7 +297,7 @@ subroutine amg_d_smoothers_bld(a,desc_a,prec,info,amold,vmold,imold)
     call prec%precv(i)%bld(info,amold=amold,vmold=vmold,imold=imold,ilv=i)
 
     if (info /= psb_success_) then
-      write(ch_err,'(a,i7)') 'Error @ level',i
+      write(ch_err,'(a,i7)') 'Error @ level ',i
       call psb_errpush(psb_err_internal_error_,name,&
            & a_err=ch_err)
       goto 9999
diff --git a/amgprec/impl/amg_s_hierarchy_bld.F90 b/amgprec/impl/amg_s_hierarchy_bld.F90
index b8fba40d..454847ef 100644
--- a/amgprec/impl/amg_s_hierarchy_bld.F90
+++ b/amgprec/impl/amg_s_hierarchy_bld.F90
@@ -94,7 +94,8 @@ subroutine amg_s_hierarchy_bld(a,desc_a,prec,info,cpymat)
   type(amg_s_onelev_type), allocatable :: tprecv(:)
   logical :: cpymat_
   integer(psb_ipk_)  :: debug_level, debug_unit
-  character(len=20)  :: name, ch_err
+  character(len=20)  :: name
+  character(len=40)  :: ch_err
   integer(psb_ipk_), save  :: idx_bldtp=-1, idx_matasb=-1
   logical, parameter :: do_timings=.false.
 
@@ -333,9 +334,10 @@ subroutine amg_s_hierarchy_bld(a,desc_a,prec,info,cpymat)
          & prec%precv(i-1)%base_desc,&
          & ilaggr,nlaggr,op_prol,prec%ag_data,info)
     if (do_timings) call psb_toc(idx_bldtp)
-    if (info /= psb_success_) then 
+    if (info /= psb_success_) then
+      write(ch_err,'(a,i7)') 'Map bld fail @ level ',i
       call psb_errpush(psb_err_internal_error_,name,&
-           & a_err='Map build')
+           & a_err=ch_err)
       goto 9999
     endif
 
@@ -406,7 +408,7 @@ subroutine amg_s_hierarchy_bld(a,desc_a,prec,info,cpymat)
            & coarse_sm,coarse_sm2,info)
       if (newsz < i) then
         !
-        ! We are going back and revisit a previous leve;
+        ! We are going back and revisit a previous level;
         ! recover the aggregation.
         !
         ilaggr = prec%precv(newsz)%linmap%iaggr
@@ -419,8 +421,9 @@ subroutine amg_s_hierarchy_bld(a,desc_a,prec,info,cpymat)
            & ilaggr,nlaggr,op_prol,info)
       if (do_timings) call psb_toc(idx_matasb)      
       if (info /= 0) then 
+        write(ch_err,'(a,i7)') 'Mat asb fail @ level ',newsz
         call psb_errpush(psb_err_internal_error_,name,&
-             & a_err='Mat asb')
+             & a_err=ch_err)
         goto 9999
       endif
       exit array_build_loop
@@ -432,8 +435,9 @@ subroutine amg_s_hierarchy_bld(a,desc_a,prec,info,cpymat)
       if (do_timings) call psb_toc(idx_matasb)      
     end if
     if (info /= psb_success_) then 
+      write(ch_err,'(a,i7)') 'Mat asb fail @ level ',i
       call psb_errpush(psb_err_internal_error_,name,&
-           & a_err='Map build')
+           & a_err=ch_err)
       goto 9999
     endif
     if (i<iszv) call prec%precv(i)%update_aggr(prec%precv(i+1),info)
diff --git a/amgprec/impl/amg_s_smoothers_bld.f90 b/amgprec/impl/amg_s_smoothers_bld.f90
index 5c02356d..e274e68a 100644
--- a/amgprec/impl/amg_s_smoothers_bld.f90
+++ b/amgprec/impl/amg_s_smoothers_bld.f90
@@ -101,7 +101,8 @@ subroutine amg_s_smoothers_bld(a,desc_a,prec,info,amold,vmold,imold)
   real(psb_spk_)     :: mnaggratio
   integer(psb_ipk_)   :: coarse_solve_id
   integer(psb_ipk_)   :: debug_level, debug_unit
-  character(len=20)   :: name, ch_err
+  character(len=20)   :: name
+  character(len=40)   :: ch_err
 
   info=psb_success_
   err=0
@@ -296,7 +297,7 @@ subroutine amg_s_smoothers_bld(a,desc_a,prec,info,amold,vmold,imold)
     call prec%precv(i)%bld(info,amold=amold,vmold=vmold,imold=imold,ilv=i)
 
     if (info /= psb_success_) then
-      write(ch_err,'(a,i7)') 'Error @ level',i
+      write(ch_err,'(a,i7)') 'Error @ level ',i
       call psb_errpush(psb_err_internal_error_,name,&
            & a_err=ch_err)
       goto 9999
diff --git a/amgprec/impl/amg_z_hierarchy_bld.F90 b/amgprec/impl/amg_z_hierarchy_bld.F90
index 3588e381..6678530a 100644
--- a/amgprec/impl/amg_z_hierarchy_bld.F90
+++ b/amgprec/impl/amg_z_hierarchy_bld.F90
@@ -94,7 +94,8 @@ subroutine amg_z_hierarchy_bld(a,desc_a,prec,info,cpymat)
   type(amg_z_onelev_type), allocatable :: tprecv(:)
   logical :: cpymat_
   integer(psb_ipk_)  :: debug_level, debug_unit
-  character(len=20)  :: name, ch_err
+  character(len=20)  :: name
+  character(len=40)  :: ch_err
   integer(psb_ipk_), save  :: idx_bldtp=-1, idx_matasb=-1
   logical, parameter :: do_timings=.false.
 
@@ -333,9 +334,10 @@ subroutine amg_z_hierarchy_bld(a,desc_a,prec,info,cpymat)
          & prec%precv(i-1)%base_desc,&
          & ilaggr,nlaggr,op_prol,prec%ag_data,info)
     if (do_timings) call psb_toc(idx_bldtp)
-    if (info /= psb_success_) then 
+    if (info /= psb_success_) then
+      write(ch_err,'(a,i7)') 'Map bld fail @ level ',i
       call psb_errpush(psb_err_internal_error_,name,&
-           & a_err='Map build')
+           & a_err=ch_err)
       goto 9999
     endif
 
@@ -406,7 +408,7 @@ subroutine amg_z_hierarchy_bld(a,desc_a,prec,info,cpymat)
            & coarse_sm,coarse_sm2,info)
       if (newsz < i) then
         !
-        ! We are going back and revisit a previous leve;
+        ! We are going back and revisit a previous level;
         ! recover the aggregation.
         !
         ilaggr = prec%precv(newsz)%linmap%iaggr
@@ -419,8 +421,9 @@ subroutine amg_z_hierarchy_bld(a,desc_a,prec,info,cpymat)
            & ilaggr,nlaggr,op_prol,info)
       if (do_timings) call psb_toc(idx_matasb)      
       if (info /= 0) then 
+        write(ch_err,'(a,i7)') 'Mat asb fail @ level ',newsz
         call psb_errpush(psb_err_internal_error_,name,&
-             & a_err='Mat asb')
+             & a_err=ch_err)
         goto 9999
       endif
       exit array_build_loop
@@ -432,8 +435,9 @@ subroutine amg_z_hierarchy_bld(a,desc_a,prec,info,cpymat)
       if (do_timings) call psb_toc(idx_matasb)      
     end if
     if (info /= psb_success_) then 
+      write(ch_err,'(a,i7)') 'Mat asb fail @ level ',i
       call psb_errpush(psb_err_internal_error_,name,&
-           & a_err='Map build')
+           & a_err=ch_err)
       goto 9999
     endif
     if (i<iszv) call prec%precv(i)%update_aggr(prec%precv(i+1),info)
diff --git a/amgprec/impl/amg_z_smoothers_bld.f90 b/amgprec/impl/amg_z_smoothers_bld.f90
index c58f31a6..3a081409 100644
--- a/amgprec/impl/amg_z_smoothers_bld.f90
+++ b/amgprec/impl/amg_z_smoothers_bld.f90
@@ -101,7 +101,8 @@ subroutine amg_z_smoothers_bld(a,desc_a,prec,info,amold,vmold,imold)
   real(psb_dpk_)     :: mnaggratio
   integer(psb_ipk_)   :: coarse_solve_id
   integer(psb_ipk_)   :: debug_level, debug_unit
-  character(len=20)   :: name, ch_err
+  character(len=20)   :: name
+  character(len=40)   :: ch_err
 
   info=psb_success_
   err=0
@@ -296,7 +297,7 @@ subroutine amg_z_smoothers_bld(a,desc_a,prec,info,amold,vmold,imold)
     call prec%precv(i)%bld(info,amold=amold,vmold=vmold,imold=imold,ilv=i)
 
     if (info /= psb_success_) then
-      write(ch_err,'(a,i7)') 'Error @ level',i
+      write(ch_err,'(a,i7)') 'Error @ level ',i
       call psb_errpush(psb_err_internal_error_,name,&
            & a_err=ch_err)
       goto 9999