I have had several similar experiences lately with 5.0.6. I normally do not have the application open for more than an hour or two at at time while working, yet it seems to crash with an Access Violation a couple of times per day. I've noticed it happening frequently while switching tabs. In the most recent case, I pressed CTRL+F4 to close the current tab and return to another tab for additional work, but it threw an access violation error.
Prior to this version, I had used it for many years and only had access violations appear maybe once every few months in every day usage. It is definitely occurring more frequently in this version. -- <https://forum.pspad.com/read.php?4,73918,76359> PSPad freeware editor https://www.pspad.com