2.4.7 What is this error 1169?

This means that the Google Scholar response to your query contained no entries. Possible causes include:

If you are unlucky, it could be that your computer is located behind a web proxy that forwards your queries and those of your colleagues to Google Scholar. In that case, all those queries appear to come from a single system as far as Google Scholar is concerned, which may cause it to block further queries from any of you. Contact your local system administrator if you suspect that this might be the case.