Email Ticket Creation Error

[snapgt]

I am attempting to fetch email from a gmail account and have set it up using IMAPS (POP3S refuses to show up even though all modules have been installed as indicated by otrs.CheckModules.pl). When the gmail account is empty, the fetch mail process indicates that it finishes checking the account successfully, but when there is an email in the inbox, I get the following error:

Server error!

The server encountered an internal error and was unable to complete your request.

Error message:
malformed header from script 'index.pl': Bad header: [...cpan-lib/Net/IMAP/Simple.p

If you think this is a server error, please contact the webmaster.
Error 500

Can anybody advise me as to why this error is occurring and/or how I can get POP3S to show up? I've spent the last several hours searching for a solution and have come up empty.

Thanks!

[reneeb]

Are there more information in Apaches error.log?

[snapgt]

The error log only shows the following information around the time of the malformed header error:

[Mon Feb 16 18:05:29.391942 2015] [cgi:error] [pid 8585] [client XXX.XXX.XXX.XXX:XXXXX] malformed header from script 'index.pl': Bad header: [...cpan-lib/Net/IMAP/Simple.p, referer: http://XXX.XXX.XXX.XXX/otrs/index.pl?Ac ... ailAccount

I have also noticed the following error messages which might be tied to the fact that POP3S does not show up in the dropdown list when configuring a new email account.

[Mon Feb 16 18:06:00.833119 2015] [cgi:error] [pid 8247] [client XXX.XXX.XXX.XXX:XXXXX] AH01215: [Mon Feb 16 18:06:00 2015] index.pl: Subroutine Net::POP3::starttls redefined at /opt/otrs/bin/cgi-bin/../../Kernel/cpan-lib/Net/SSLGlue/POP3.pm line 13., referer: http://XXX.XXX.XXX.XXX/otrs/index.pl?Action=Admin
[Mon Feb 16 18:06:00.833568 2015] [cgi:error] [pid 8247] [client XXX.XXX.XXX.XXX:XXXXX] AH01215: [Mon Feb 16 18:06:00 2015] index.pl: Subroutine Net::POP3::_STLS redefined at /opt/otrs/bin/cgi-bin/../../Kernel/cpan-lib/Net/SSLGlue/POP3.pm line 27., referer: http://XXX.XXX.XXX.XXX/otrs/index.pl?Action=Admin

Any help on either would be much appreciated. Thanks!