akushaper error 187 file not saved....???

Anyone know what could cause akushaper to throw this error? Its like I get so close to the board I want, do all my modifications…then try to save it and it tells me error 187 file not saved there is something wrong with your file.

 

Can be quite frustrating after the 4th or 5th try with the same file over and over again… :frowning: