Hello, this crash does not seem to be caused by WRobot, but by Wow (or one of your addons), bliz release a lot of hotfixs (for bug like that I think), if you get this problem again in 1 or 2 weeks do not hesitate to request help again.
Hello, can you read this: https://wrobot.eu/forums/topic/1381-repairinstall-wrobot/#comment-966
If you problem is not resolved, can you share log file of session where WRobot have crashed (you can found log in file "Logs") ( https://wrobot.eu/forums/topic/1779-how-to-post-your-log-file-with-your-topic/ ).
Hello,
You can try to close WRobot, remove file "WRobot\Data\NpcDB.xml", launch WRobot and go to tab "General Settings" > "advanced general settings..." > tab "Others options" > disable all option in "Automatically add nearest NPCs...". Now add in your profile (or in tab "Tools" > "Npc DB") vendor and repair