I'm not sure if anyone has reported this, or if it's a known issue...
After doing a couple of days of troubleshooting I've identified a possible bug. I'm not sure if this would fall under a LSPDFR issue or trainer issue. See below.
Scenario: You setup a character and use them to answer calls etc. Use "any" trainer to make modifications. You then decide to create a second character for your game. If that 2nd character loads and you have a trainer install your game crashes. If you switch back to the original character there isn't an issue with crashing. The crash that happens is GTA V completely exits you to the desktop.
I hope this helps someone out there....