I upgraded to 2015 SP4 and my equations are all blown up in my part models.

The error is the same next to all of the "The syntax of this equation is incorrect," but they all worked perfectly in 2014 SP4 right before I upgraded.

When I try to go in and edit none of the cells allow a change. If I delete the value and enter something new it just reverts to the original value. If I delete my global variables to create new ones it won't create any new ones and jest keeps "blanking" the naming column.

Please, any way to fix this would be greatly appreciated. This seems like a huge bug and it is happening on both of the computers that I upgraded. I use these parts to create new ones and they are completely unusable now.

Thank you in advance for your help.