If you get "tons of errors" with ULib then you have installation or configuration issues. I get zero errors from Ulib across six servers except in cases where I've installed something incorrectly and/or is out-of-date.
Re: OP, are you on the latest version of ULib? Can you provide more context on when the error occurs (ie, is it happening when you're pasting a dupe into your local dupes? That's what it looks like from the stack trace)