Erroneous Save wiped out the .SDM file
Erroneous Save wiped out the .SDM file
I was trying to extract a puzzle from an .SDM file. I accidentally told Sudocue to "Save" instead of "Save as", and it wiped out the .SDM file (i.e. zero length). I did get an error message saying that the file extension had to be .SDK or .SUD, but by then it was too late.