• Posts: 2
  • Joined: 23/12/2011
We have upgraded our forum to (have also tried 1.9.6 and receive the same issue), and we receive the error:

Could not load file or assembly 'YAF.Classes.Config, Version=, Culture=neutral, PublicKeyToken=f3828393ba2d803c' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)

We have made sure that we have retained our settings in db.config and mail.config and have used the settings from the supplied upgrade web config file. Does anybody have any ideas?

Thanks in advance...
  • Posts: 4079
  • Joined: 06/03/2010
In the zip file of the yaf package is an readme.htm file included which contains specific instructions when you upgrade to

But it looks like that dome old dlls are in your bin folder. Did you delete all the dlls in the bin folder before you upgrade?
  • Posts: 2
  • Joined: 23/12/2011
Many thanks, we should have read the file but ignorantly assumed it would be the same as previous upgrades.

Thanks again.
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