8 votesNeed more info · 21 comments · Adobe InDesign: Bugs » Idml Export · Flag idea as inappropriate… · Admin →J commented
Having same prob. saving as idml in latest Indesign CC and client can't open in InDesign CS6. (Have tried saving as idml, packaging to get idml, renaming as .zip then changing back to .idml). Error message reads: Cannot open the file "tester.idml". Adobe InDesign may not support the file format, a plug-in that supports the file format may be missing, or the file may be open in another application.