Did you search for it in the VirtualStore?
Don't know if this is related or not, but I experienced something similar recently. I made a part in LDDP and saved it were I usually save them, in my parts-folder in C:\Program Files (x86)\LDraw\My parts\... I made a new folder for it there. (I know that it is the wrong place, now that I have upgraded my machine to Win10. I haven't moved them yet).
LDDP did save it and I didn't get a warning about it being a protected place.
I then opened a explorer-window to look at the part in the folder I just made, but to my surprice it wasn't there. Neither the file, nor the folder. Strange.
I opened LDDP again and looked in the recent files, and there it was. Even stranger.
Missing, if I looked in the explorer window, but present from inside LDDP.
I made a search on my c: drive and found that my file was saved in a totaly different place:
C:\Users\Magnus\AppData\Local\VirtualStore\Program Files (x86)\LDraw\My parts\...
It seems that Win 10 is fooling LDDP to show a "fake" address when I save my files in a protected area, and instead saved my file somewere else.
Don't know if this is related or not, but I experienced something similar recently. I made a part in LDDP and saved it were I usually save them, in my parts-folder in C:\Program Files (x86)\LDraw\My parts\... I made a new folder for it there. (I know that it is the wrong place, now that I have upgraded my machine to Win10. I haven't moved them yet).
LDDP did save it and I didn't get a warning about it being a protected place.
I then opened a explorer-window to look at the part in the folder I just made, but to my surprice it wasn't there. Neither the file, nor the folder. Strange.
I opened LDDP again and looked in the recent files, and there it was. Even stranger.
Missing, if I looked in the explorer window, but present from inside LDDP.
I made a search on my c: drive and found that my file was saved in a totaly different place:
C:\Users\Magnus\AppData\Local\VirtualStore\Program Files (x86)\LDraw\My parts\...
It seems that Win 10 is fooling LDDP to show a "fake" address when I save my files in a protected area, and instead saved my file somewere else.