NPP version: 6.5.2 (UNICODE)
1) Run Perforce P4V
2) Open file in NPP by right-clicking in Workspace View, and choosing Open...
3) After seeing file opened in NPP, close file in NPP
3) In NPP, re-open file via File -> Recent files list
Result: crash (screen-shot attached).
Same file re-opens fine if originally opened by some means other than via P4V (eg via Windows Explorer context menu, etc).
File was php, but not sure if relevant, but issue did not occur when tested with a random ini and txt file. I have no extra plugins installed.
Clearing recent files list didn't fix the issue.
Tried to create crash dump, but got error (attached screen shot).