After a prolonged beta, the latest Arma 2: Operation Arrowhead patch has finally matured and reached its release phase. It includes several engine fixes listed in the changelog below. On top of that, we have included “CorePatch” and “CorePatch2” data patches developed by members of the community. Huge thanks and credits to Goliath and SaMatra and several other devoted community developers (for full credits, please see the changelog).

in case you experience any issue, leave us your feedback in this thread.

Arma 2: Operation Arrowhead 1.63.131129 engine fixes:

• added hardcoded query port at UDPport+1
• added check NAN (not a number)
• fixed squad logo/xml crashes and issues
• fixed CU-RE-L exploit vs BattlEye logging
• fixed server no more loads client profile
• fixed destroyed structures damaging JIP clients
• fixed random server \KEYS\ errors with .bikey files
• optimized query traffic
• additional crash fixes

CorePatch Changelog is too long for Steam announcement so, please, check it out at our forums
CorePatch credits:

• Goliath6 for his all work on CorePatch for A2, A2: OA
• Sa-Matra for his support and help on bug fixing (+ all work on CorePatch2)
• groove_c for his support and help on bug fixing
• Schatten for his support and help on bug fixing
• .Kju who provided a (very!) long list of errors
• Rob Graham (eggbeast) who provided Dwarden's script to fix the Fire-In-The-Sky bug
• Dwarden for his Fire-In-The-Sky script bug fix and his support
• OpusFmSPol who provided a very, very long list of errors and their fixes of the warfare module
• Wolffy.au and zGuba for their BIS Module Improvement Project (https://dev.withsix.com/projects/mip) that even inspired me
• Defunkt for his Anzins mod included in CorePatch
• OMAC for his support on bug fixing
• Dimon for his support on bug fixing
• Xeno426 (Xenomorph) for his suggestions, improvements and bug fixing in the CCP Project
• All the contributors of the CCP Project
• All testers and supporters of Corepatch