I'm still pretty new to Perl myself, so I can't elaborate like some of the others.  However, I have noticed that when setting up a *.lib file, the last line containing text of the lib file must read simply as follows:

I don't know why that simple arabic numeral one with a semi-colon is necessary, but it is.  Again, there are those that will probably follow my comment with an explanation.  Actually, I would be interested to hear their response to this element.