I usually have 2 folders , one is game name , and the other folder is game name working, so any changes i make that work are copied into that folder and saved so I dont have to go back to square one,
for some reason all sprites got wiped out, when i renamed the game dev proj. file as "same name old" then edited the gdp in note pad to change the bmp to jpg to reduce file size .... any way after loading screen errors i renamed the old back to its original and deleted other , still errors, even my backup folder had the same problem, all the sprites and settings dissipeared from all projects .
my old game with totally diffrent file names was unscathed , worked fine. so my base program is fine .
seems even though i had a diffrent folder name , game dev saw all files of that name anywhere and changed them ,,,, I didnt get any error messages upon closing program and it never crashed ,
These oddities do happen , first time i posted on it though, especially with numba 2.0 coming soon

ps. yes all fire wall antivirus anti spyware battle wall and scans ect ect. up and running, cant be a hack sgdk dose these oddities on my other pc as well and its never been online its net virgin . I doubt ill get a total solution seems the nature of the beast,but blue monk might consider this a bit in 2.0 , never screw up sgdk with 3d , in my book sprites rock, every free 3d is garbage' and even worse to model yourself.