I have an AddIn that open a complex form. The version of the addin is written into the config.esriaddinx and is written on the form too.
User A install the addin and everything is fine (I am not sure if user A had the previous version).
User B (that has the previous version) installed the new version (on the same machine as user A).
When I check the Addin manager (under customize) I get the correct version but when I press the button the form is from the previous version.
I deleted the addin instead upgrading and make sure the addin directory is empty, I deleted the normal, I tried to read the addin using directory in the option tab (addin manager) none of that works.
I somehow "remember" the previous form.