Endnote bug?


I’m using Endnote with Pages on OS X 10.9. 

After weeks of writing a document, the referencing suddenly started to malfunction. Whenever I insert a new reference, Endnote keeps adding brackets and numbers randomly after every previous citation and chewing away my existing text before. Like so:

… respective(Zhang, Pohlmann et al. 2010)0)0). Although …

Can somebody help?

Thank you!