What it is saying is that one of the values that is being added is undefined, so basically one of the math lines in there evaluates to 'some_number + undef'. We can't help you figure out which one since you didn't indicate which line in the source you pasted is the line the error came from, but I bet if you uncomment those print statements you'll find it.

We're not surrounded, we're in a target-rich environment!

In reply to Re: Tk::JBrowseEntry gives me this error I dont understand by jasonk
in thread Tk::JBrowseEntry gives me this error I dont understand by jdtoronto

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