I have a large file which was started with Maple 2015, updated with Maple 2016, then updated again today with Maple 2016.1. When I open it this evening with Maple 2015, many statements that involved a mouse click are now messed up.
I even have two graphs which are still displayed, but the statements that generated them are completly missing.
To fix it, I tried to copy a similar plot statement, paste it in, and adjust it appropriately for the missing plot statement. You can guess what happened next - the same error as started this thread:
Error, incorrect syntax in parse: `;` unexpected (near 4th character of parsed string)
Yes, I can retype it wth Maple 2015 and recreate the graph, but that is crazy. Not only does Maplesoft owe users an apology, a correct version 2016.2 promptly, but also a new program that can read a file trashed by 2016.1 and correct the errors inserted by 2016.1.