Thank you for your post.
No previous issue with "Hide Object When" losing the calculation has been reported, so I'll need some additional information.
Do you have any plug-ins installed? If so, which plug-ins? Are the plug-ins 64-bit compatible?
What other applications do you have running on the computer?
Can you post the header and the crashed thread of the crash report?
Any other information you can provide about your computing environment may be helpful in narrowing down possible causes.
Were you dealing with grouped objects by any chance? You can group options by selecting a group and using that option in the Inspector or as a menu option. You can also group objects by selecting an object and setting it up as a button--which groups the visible object with an invisible button object created by button setup.
Object names and Hide Object When expressions will then only be visible for names and expressions specified for the group. To see and modify the expression (or the object name) for a member of the group, you have to first ungroup the group of objects--which will then destroy any object name or Hide Object When expression that was specified for the group.
Hi, thanks for the comments.
Not using on grouped objects although selecting several objects then editing the hide object has the same error.
Will get a list of the plugins but think they are all 64bit.
Will check running programs and plugins and come back to you.