Here's a traced console of the crash. Be warned, however. The file is 27.75MB.
Traced console.log
I hope this helps.
well first, you need to fix or disable broken addons:
>>> Error report complete.
ADD-ON "Brick_4x4f_Print" CONTAINS SYNTAX ERRORS
and
Loading Add-On: Brick_ExtraLogic (CRC:-786662079)
Executing Add-Ons/Brick_ExtraLogic/server.cs.
ERROR: ForceRequiredAddOn() - "Brick_Logic" is not a valid add-on
BackTrace: ->ServerSettingsGui::clickLaunchGame->createServer->onServerCreated->loadAddOns->ForceRequiredAddOn
ERROR: Brick_ThinkLogic - required add-on Brick_Logic not found. Mod cannot load.
BackTrace: ->ServerSettingsGui::clickLaunchGame->createServer->onServerCreated->loadAddOns
ERROR: Brick datablock "brick1x1x10brickData" has the same uiname as "brick1x1x30Data" (1x1x10) - removing.
BackTrace: ->ServerSettingsGui::clickLaunchGame->createServer->onServerCreated->verifyBrickUINames
ERROR: Brick datablock "brick1x2x10brickData" has the same uiname as "brick1x2x30Data" (1x2x10) - removing.
BackTrace: ->ServerSettingsGui::clickLaunchGame->createServer->onServerCreated->verifyBrickUINames
ERROR: Brick datablock "brick1x3x10brickData" has the same uiname as "brick1x3x30Data" (1x3x10) - removing.
BackTrace: ->ServerSettingsGui::clickLaunchGame->createServer->onServerCreated->verifyBrickUINames
ERROR: Brick datablock "brick1x4x10brickData" has the same uiname as "brick1x4x30Data" (1x4x10) - removing.
BackTrace: ->ServerSettingsGui::clickLaunchGame->createServer->onServerCreated->verifyBrickUINames
Really your best option here is to start with ONLY the default addons, and then enable the ones you want, 1 at a time until something breaks. After that, chances are the last one you enable is the broken / buggy / conflicting one.
Yes this will take a LONG time to do, especially if you have lots of addons.