Just installed Prepare3D latest version this morning and it seems to fine. Realised there was no 737 (unlike X-Plane 11 I'm also using) and so, therefore, purchased PMDG.
Install worked fine and did the update.
Start P3D all starts fine and I can see the 737 aircraft, choose one and then start a flight and I get "Warning: the PMDG product was unable to create its work file. Please make sure that you are running Prepare3D as an administrator. Clicking Ok crashes the program.
Apologies in advance for being a newbie. I've only used XP11 (Sorry for swearing) up until now but wanted to use ORBX (not installed yet). Tried a Google search and all the stuff is old and irrelevant). All version of software is as downloaded today so should be latest.
Any ideas welcomed.
Kind Regards
Stuart