I installed Turbodosbox on a Galaxy Note 8 Android tablet, then installed my 32-bit DOS Forth language program with 32-bit Pharlap extender under Turbodosbox. The program ran just fine for a few months.

Then, without any apparent cause, it stopped working. That is, Dosbox still runs ok, but when I execute my Forth program, I now get the error message:

"Error TNT.20058: Can't create VM swap file of size 0 in directory C:\"

It is still the same program and data. I have reloaded everything carefully, yet this error appears now, whereas it didn't before. As far as I know, there has been no underlying change anywhere on my Android tablet. I also tried running or not running Dosidle first, but that made no difference.

Any ideas?