Module Manager checksum error for any module

[arcam]

Hello,

I have juste upgraded a cmsms installation from 1.6.5 to 1.8.1 (I know, it was quite a jump, but I only recently took over the system from my predecessor... )

Now, I have a weird situation: if I try to upgrade or install any module, I get the "Checksum error" message:

Checksum error. This probably indicates a corrupt file, either when it was uploaded to the repository, or a problem in transit down to your machine. (expected %s and got %s).

Notice the "%s": on an upgrade of any module, I only get those. If I try to install a new module, I get two different checksums.

I already checked the permission, and they're set correctly.

Anyone has any idea?

[pukka]

This probably does not deal directly with problem you are having but have you tried installing the module manually (i.e download the zip or xml file).

[arcam]

Yes, manual installation works

A workaround would be to unistall all modules, and then reinstall them manually... but since I have a big number of them, I really hope there is some faster way to fix it...

[arcam]

No ideas, anyone?