Error when importing banks

Unity plugin version 1.06.07 gives the following error when importing banks created with FMOD Studio 1.06.07:

Master was built with an incompatible version of FMOD Studio. Make sure the unity integration matches the FMOD Studio version.

I tried to delete the plugin and importing it again, without success. Plugin and software version are the same, what is going on here?

When you delete the plugin make sure all copies of fmod.dll and fmodstudio.dll (check the entire project folder) are deleted.