Hi there,
I am not using FTB, we have a Tekkit Lite server. Just to let you know that this problem is everywhere
It seems that this error came with changing the client launcher yesterday. Does FTB use the same launcher to connect as Tekkit Lite does...I don't know.
I am using mcpc-plus with my server, so I do not get any crashes but every 1-2 second I am getting the errors in the console which really slows down everything. (4-5tps continously for 15-20 players).
After whitelisting the server...not errors in the console at all. It starts with players connecting and running around. So my opinion was the launcher...that was also the only modification I am aware og since it happened yesterday for the first time.
EDIT: ah, I forgot. Seems that using mcpc-plus helps not crashing the server. With the normal tekkitlite.jar it dows not start at all. Also turning the game to peaceful (spawn-monsters=false) helps to overcome this situation.I changed this 2 minutes ago, ans no errors anymore in the console, so back to 20tps
regards,
jahan.