A: We made some changes to the gridding tool in ioGAS 4.5 and as a result if any older 4.4 or earlier GAS files were saved with open grid windows in them they won’t be able to be opened in ioGAS 4.5.

 What you can do is install ioGAS 4.4 to another location on your computer and use this to open the GAS file up and close the grid window and then re-save. After you do this you should be able to open up the GAS file with all of your other saved plots into ioGAS 4.5.