Can't get OSC_Preprocessing to work

I am on 1.2.5. Having lots of frustration. Created my files and ran it once. My flats weren’t right so took new ones. Since then I get the same error over and over.

Images must have same dimensions. They do. except fits files are 3 layers and .ARW are 1 layer. I have read the forum. I have removed all jpg and any other extrenious files from my folders. Still get the same error. I am ready to say the hell with it and try something else to stack my photos.

So Please can you help me.

Very Frustrated

Hello

So they don’t have the same dimension!

Without seeing logs. I can’t do more.