please describe. What is the "other module" doing? What are you submitting? Is it a third party module? Have you contacted the vendor? Or did you write it yourself? If you wrote it yourself: Did you debug? What line is firing the exception? Is there some error in the event log?
Please understand that everybody here is willing to help, but we need some more information than "it is not working".
PS. The forum "About dnncommunity.org" is about this web site. Please use the correct forum if you have problems with administration or meodule development etc.