Henderson

There was a new GTA 5 patch by Rockstar on 2/11. If you've downloaded and installed it, you will need to wait for an updated Ragehook plugin. I currently have to wait for Ragehook .37 because there's an issue with the .36 and the retail version of GTA which causes LSPDFR to crash. It's unplayable until they have a new version of it.
THP, it was a nice effort to help someone out, but you may want to read their posts a bit more carefully. He says he has no callouts or plugins installed.

The makers of RPH have apparently found an issue stemming from the last Rockstar update and clashes with the retail version of .36. I'm not a professor of code or anything, so I can't get real specific. Basically, a part of RPH gets access to certain memory from the game which Rockstar has locked down on the CD version that it shouldn't, which results in a memory crash. If anyone gets something in their crash log referring to corrupt memory, this is it.
They seem to have found the issue and will fix it in version .37. I just happened to see this on their forums, and I'm not sure how recent they've found this. But anyone having the issue (me included), hopefully this resolves the issue.