i don't experience any of those crashes during my tests, sorry, not sure where or what they are or where they come from.
one thing that I can tell you, AIDIS will need to work on their server. If you see white-page only, or black page, usually you will get "communication error" popup, just keep retry a couple of times, you will get in eventually. I've got one of those in the event page:
error on this page
https://prod-app.world-en.aidis-games.com/gme/actionSymbol/V01Ujd2H.php
no idea what happened, but that's definitely is not something that I can control
tried this flame thrower event on solo...
Shared Files & Folders
i can see that i need to fix that silly 9999, it was meant to 1 hit the boss, but yeah not sure where the code for that now, will need to check when i have chance.
I can reproduce the crash on event for whatever that "17 hr left" one, yes, that's a crash from AIDIS code directly. Not sure what that is. My only suggestion is to try again and see if crash at different time. AIDIS has some ugly code and slow servers, some times it's just hard to test what happened.