diff --git a/base/mp_abort.sas b/base/mp_abort.sas
index ff8926d..039272a 100644
--- a/base/mp_abort.sas
+++ b/base/mp_abort.sas
@@ -89,7 +89,12 @@
     or "&SYSPROCESSNAME "="Compute Server "
     or &mode=INCLUDE
   %then %do;
-    options obs=max replace nosyntaxcheck mprint;
+    options obs=max replace mprint;
+    %if "%substr(&sysver,1,1)" ne "4" and "%substr(&sysver,1,1)" ne "5"
+    %then %do;
+      options nosyntaxcheck;
+    %end;
+
     %if &mode=INCLUDE %then %do;
       %if %sysfunc(exist(&errds))=1 %then %do;
         data _null_;
diff --git a/base/mp_getmaxvarlengths.sas b/base/mp_getmaxvarlengths.sas
index 133f249..92d422f 100755
--- a/base/mp_getmaxvarlengths.sas
+++ b/base/mp_getmaxvarlengths.sas
@@ -41,6 +41,7 @@
   <h4> SAS Macros </h4>
   @li mcf_length.sas
   @li mf_getuniquename.sas
+  @li mf_getvarcount.sas
   @li mf_getvarlist.sas
   @li mf_getvartype.sas
   @li mf_getvarformat.sas
@@ -60,7 +61,7 @@
   ,outds=work.mp_getmaxvarlengths
 )/*/STORE SOURCE*/;
 
-%local vars prefix x var fmt;
+%local vars prefix x var fmt srcds;
 %let vars=%mf_getvarlist(libds=&libds);
 %let prefix=%substr(%mf_getuniquename(),1,25);
 %let num2char=%upcase(&num2char);
@@ -70,6 +71,24 @@
   %mcf_length(wrap=YES, insert_cmplib=YES)
 %end;
 
+%if &num2char=NO
+  and ("%substr(&sysver,1,1)"="4" or "%substr(&sysver,1,1)"="5")
+  and %mf_getvarcount(&libds,typefilter=N) gt 0
+%then %do;
+  /* custom functions not supported in summary operations */
+  %let srcds=%mf_getuniquename();
+  data &srcds/view=&srcds;
+    set &libds;
+  %do x=1 %to %sysfunc(countw(&vars,%str( )));
+    %let var=%scan(&vars,&x);
+    %if %mf_getvartype(&libds,&var)=N %then %do;
+      &prefix.&x=mcf_length(&var);
+    %end;
+  %end;
+  run;
+%end;
+%else %let srcds=&libds;
+
 proc sql;
 create table &outds (rename=(
     %do x=1 %to %sysfunc(countw(&vars,%str( )));
@@ -94,10 +113,15 @@ create table &outds (rename=(
         %end;
       %end;
       %else %do;
-        max(mcf_length(&var)) as &prefix.&x
+        %if "%substr(&sysver,1,1)"="4" or "%substr(&sysver,1,1)"="5" %then %do;
+          max(&prefix.&x) as &prefix.&x
+        %end;
+        %else %do;
+          max(mcf_length(&var)) as &prefix.&x
+        %end;
       %end;
     %end;
-  from &libds;
+  from &srcds;
 
   proc transpose data=&outds
     out=&outds(rename=(_name_=NAME COL1=MAXLEN));
diff --git a/base/mp_storediffs.sas b/base/mp_storediffs.sas
index 878cb55..96b645f 100644
--- a/base/mp_storediffs.sas
+++ b/base/mp_storediffs.sas
@@ -125,7 +125,7 @@
 data &ds1;
   set &dslist indsname=&inds_auto;
   &hashkey=put(md5(catx('|',%mf_getquotedstr(&key,quote=N))),$hex32.);
-  &inds_keep=&inds_auto;
+  &inds_keep=upcase(&inds_auto);
 proc sort;
   by &inds_keep &hashkey;
 run;
@@ -160,8 +160,8 @@ data &ds4;
   tgtvar_nm=upcase(tgtvar_nm);
   if tgtvar_nm in (%upcase(&vlist));
 
-  if &inds_auto="&ds2" then tgtvar_type='N';
-  else if &inds_auto="&ds3" then tgtvar_type='C';
+  if upcase(&inds_auto)="&ds2" then tgtvar_type='N';
+  else if upcase(&inds_auto)="&ds3" then tgtvar_type='C';
   else do;
     putlog "%str(ERR)OR: unidentified vartype input!" &inds_auto;
     call symputx('syscc',98);
diff --git a/tests/crossplatform/mf_getvarcount.test.sas b/tests/crossplatform/mf_getvarcount.test.sas
index bdf23b9..dabe961 100644
--- a/tests/crossplatform/mf_getvarcount.test.sas
+++ b/tests/crossplatform/mf_getvarcount.test.sas
@@ -4,6 +4,7 @@
 
   <h4> SAS Macros </h4>
   @li mf_getvarcount.sas
+  @li mp_assertscope.sas
 
 **/
 
@@ -13,6 +14,10 @@ data work.all work.nums(keep=num1 num2) work.chars(keep=char1 char2);
   output;
 run;
 
+%mp_assertscope(SNAPSHOT)
+%put scope check:%mf_getvarcount(work.all);
+%mp_assertscope(COMPARE)
+
 %mp_assert(
   iftrue=(%mf_getvarcount(work.all)=5),
   desc=%str(Checking for mixed vars),
diff --git a/tests/crossplatform/mp_getmaxvarlengths.test.sas b/tests/crossplatform/mp_getmaxvarlengths.test.sas
index 2ec974f..baf1e6e 100644
--- a/tests/crossplatform/mp_getmaxvarlengths.test.sas
+++ b/tests/crossplatform/mp_getmaxvarlengths.test.sas
@@ -10,10 +10,48 @@
 
 **/
 
+data work.class ;
+attrib
+Name                             length= $8
+Sex                              length= $1
+Age                              length= 8
+Height                           length= 8
+Weight                           length= 8
+;
+infile cards dsd;
+input
+  Name                             :$char.
+  Sex                              :$char.
+  Age
+  Height
+  Weight
+;
+datalines4;
+Alfred,M,14,69,112.5
+Alice,F,13,56.5,84
+Barbara,F,13,65.3,98
+Carol,F,14,62.8,102.5
+Henry,M,14,63.5,102.5
+James,M,12,57.3,83
+Jane,F,12,59.8,84.5
+Janet,F,15,62.5,112.5
+Jeffrey,M,13,62.5,84
+John,M,12,59,99.5
+Joyce,F,11,51.3,50.5
+Judy,F,14,64.3,90
+Louise,F,12,56.3,77
+Mary,F,15,66.5,112
+Philip,M,16,72,150
+Robert,M,12,64.8,128
+Ronald,M,15,67,133
+Thomas,M,11,57.5,85
+William,M,15,66.5,112
+;;;;
+run;
 
 /* regular usage */
 %mp_assertscope(SNAPSHOT)
-%mp_getmaxvarlengths(sashelp.class,outds=work.myds)
+%mp_getmaxvarlengths(work.class,outds=work.myds)
 %mp_assertscope(COMPARE,desc=checking scope leakage on mp_getmaxvarlengths)
 %mp_assert(
   iftrue=(&syscc=0),