After fixing some (what I assume are copy and paste errors) I get some useful information from perl -c.

Bareword found where operator expected at download.cgi line 69, near "
+printf( "kagiRemotePostStatus"
  (Might be a runaway multi-line "" string starting on line 62)
Global symbol "$sharedSecret" requires explicit package name at downlo
+ad.cgi line 53.
Global symbol "$userName" requires explicit package name at download.c
+gi line 62.
Global symbol "$regNumber" requires explicit package name at download.
+cgi line 62.
syntax error at download.cgi line 69, near "printf( "kagiRemotePostSta
+tus"
Global symbol "%s" requires explicit package name at download.cgi line
+ 70.
Global symbol "$username" requires explicit package name at download.c
+gi line 70.
Global symbol "$regNumber" requires explicit package name at download.
+cgi line 70.
Global symbol "$sharedSecrete" requires explicit package name at downl
+oad.cgi line 70.
Global symbol "$md5" requires explicit package name at download.cgi li
+ne 70.
Global symbol "$md5" requires explicit package name at download.cgi li
+ne 70.
Global symbol "$md5" requires explicit package name at download.cgi li
+ne 92.
Global symbol "$sharedSecrete" requires explicit package name at downl
+oad.cgi line 93.
Global symbol "$md5" requires explicit package name at download.cgi li
+ne 101.
download.cgi had compilation errors.
[download]

This code won't even compile, so there is no use in poking around modules - you need to fix the basic perl stuff.

Once you do that:

• Make sure the code passes perl -c script.cgi
• Look to see what works and what doesn't
• Check for error messages in the log file
• If you can't find error messages in the log file. Run from the command line (there is plenty of info on that if you go to Search)
• Then if you're still stuck - Try and narrow the problem down to a resonable number of lines
• Then you can post relavant information here (errors, the lines of code, what it's supposed to do, and what it doesn't do)