This version is incompatible with the 6.13 version of Drupal core.

The simplicity of the problem is no reason to leave it unfixed! Patches are required for even simple mistakes!

I upgraded multiple modules on a certain site and then wasted nearly three hours trying to figure out where the problem was after I'd got complaints that information was missing on certain pages; I hadn't built those views, so I didn't understand that View Reference was necessary, and hadn't realised this error, since I hadn't looked into the list of installed modules (modules don't usually disable themselves during updates).

Patch attached; it is against DRUPAL-6--2, i.e. the “dev” tag (I don't know why can't I select that version here). As it is very obvious, I doubt it needs any further testing.

In its current form the 6.x-2.21 cannot be used without manual fixing, so I think this issue should warrant an immediate new release.

I cannot replicate the problem you are having? I don't understand, your patches just adds in something that is already there :/
I just downloaded it - the line is not missing from the file.

This issue bugs me because I see in my other modules the core line is there twice, once added by me, once by the packaging script. Weird I don't get it. I must have removed it during a CVS update thinking there was redundancy.

But this doesn't explain why the module works for me (and others) when I download and install it, but not for you two.

The reason is most likely that we both have checked out the code from the CVS, instead of downloading a tarball. Try to check out the module to an empty directory, and then check the contents of the newly checked out .info file; the line is simply not there.

Packaging script adds the into the file, and that's why it works for you—but, one should be able to maintain a Drupal installation directly from CVS.

oh thanks