I've inherited an InDesign CS5.5 document that has a couple of layers within the main text layer, one of which has a 2 further layers which are locked. However, everytime I try to unlock them (padlock check box), or delete them InDesign crashes. Also, the 'unlock all' option is greyed out... I'm sure I'm missing something here but I can't figure out what it is.. Any suggestions??*
Try exporting it to IDML. Open that file and try it.
As usual it's Bob to the rescue - thank you!!!!!!!!!!!