Not sure but try this post which helped me with a similar error http://www.dnnsoftware.com/forums/for...

No Mr. cathal
Mr. Sebasian gave me before that and I just Install it on one website, and I'm sure I Uninstall this with SQL Provider before upgrade. this error happen in 2-3 different portal. I only one time use this and before upgrade I uninstall it.
now what you mean? my DNN never upgrade after that? or I have to waiting biggest problems?
Actually in some portals I have errors and after that Search not working and I try to fix it but never fixed like http://kb.ecb.ir you can try to search "html" but no result found but there is 100 "html" in my documents... or after upgrade my Language Buttons not working and you can not change portal language after upgrade and I have several other problem like this...
and I don't know how can solve these problems... I'm not Developer to fix it... who can help me in emergency like this? after upgrade I loss my portal.... Upgrade mean end of portal in 50% of time.... for example if one container file missing, and you have had container file not found error, never can go to setting of module in DNN 7.3.1 and you can not do anything, you website will come Down...
Now how can fix Search engine? how can fix language buttons? how can fix Container error problem?