I receied a document from a client today and it was created in Adobe Indesign CS 5.5. When I try to open it I get the error "Missing Plugin: MindEngine.InDesign.Plugin" and they strongly advise me not to open it. I opened it anyway (using a copy) and it runs normally. But I cannot find any information about this plugimn for InDesign cs 5.5. Any ideas?
Is your indesign version update to latest patch 7.5.3?
If the document seems OK you can strip out the missing plugin info by exporting to .idml.
If you save the file as an IDML and then open the IDML file and re save as IND you should be good to go.