Hello. A page in my InDesign document appears to be broken. Text boxes are not visible, they can only mark if I choose command + a. Then I can copy the object and paste into another document in which they appear. You can not delete the page when the crash program. What could be wrong?
Re text boxes not visible try: View > Screen Mode > Normal.
It's not a good idea to copy and paste, use Place: File > Place.
Re your crashing, maybe you should reset your Preferences.
Choose View > Extras > Show Frame Edges. This is a document specific preference, which is why the frames will show up when you paste them into another document. The crashing is another issue. Try exporting the document as IDML to creating a fresh copy. Also check out this post at InDesignSecrets: http://indesignsecrets.com/dealing-corrupt-indesign-files.php Good luck!