I believe, I have found a problem (a bug) with Module Uploading process. I am discussing it here, just in case this has already been submitted, and I could not find it on the Bug Submission page.

 Suppose, I have two files with the same name, a1.ascx in my module. The difference is that  they are in different folders, like.

/MyModule/a1.ascx

/MyModule/folder/a1.ascx

Then, after the manifest is parsed, and the module is installed, DNN creates this file in only that place which appears later in the manifest (/MyModule/folder/a1.ascx in this case). The other file is simply not created, and obviously causes Run-time errors in the module.

I believe, that when a manifest is parsed, the installer caches the FileNames with their destination directories in some sort of a HashTable (or Dictionary), with the FileName being the key into the dictionary, thus leading the later definition to overwrite the earlier file definition (as the filenames are same). As a result, only the last file with that name is created.

Has somebody faced similar situation?? I have retried & confirmed that this problem exists!!!

I faced this situation while creating a custom Member Management module.

It had 2 controls named User.ascx, in different directories, each presenting a different aspect of a Registered User. There I faced this problem first time. Had no option, but to rename one of the controls.

At a second time, in the same module, I had 2 images named default.jpg, again in different folders, each of which was to be presented as the default image in different situations.

Clearly, you cannot always assume, that a module cannot have 2 files with same name, and same name does not necessarily mean duplicate content!!!

DNN 5 will come with a new installer and new packaging format, that AFAIK will no longer have this limitation.