Submitting files from your "My Pending Files" and CIMA are currently two different things. CIMA is to test suspicious files. Given the problems you seem to be having it appears that you've got a connection related issue. Can you upload the file to VirusTotal? www.virustotal.com
(Comodo's Analysis is also in Virus Total. If you can upload the file there and the file can be tested then it's the CIMA Page that needs reloading.