Frequently Asked Questions
We're sorry to hear that. Please have a look at the crash logs to collect the basic information we need to help you. Depending on your operating system, this will be in a different location:
Before you post this information on the forum or IRC, please read the first line of the
exception.log and check the common issues below. If you have a problem that is not mentioned here, please let us know at bugs.openra.net.
If the exception mentions an out of sync error, please also post
syncreport.log, which you will find in the same directory and get everyone else who was playing the game to post it, too. The sync log is only useful if we have multiple players submit their log. You can use, for example, diffchecker.com to find and post the trait that caused the desync exception.
Recently, updates to cleaning tools, such as "CCleaner", have additions which can cleanup your OpenRA Support folders. They may delete your replays and log files! If you have one of these tools, look for "OpenRA*" in your cleaning tool's settings and uncheck it!
In CCleaner you can find it under:
These errors occur if the game cannot start OpenGL. This could occur for a number of reasons, depending on your operating system and graphics card
If you are sure that none of the above issues apply, create a forum thread or see us on the IRC.
Download the external dependencies and extract them into the main OpenRA folder.
This one is a bit confusing and misleading. You need to have the Visual C++ 2010 redistributable installed.
For others to join your game, you must forward a port in your router for them to connect to. By default, OpenRA uses TCP port 1234. You can test this on sites like canyouseeme.org yourself.
This can be be configured in the Create Server dialog. If you have a router that supports Universal Plug and Play, go to Settings - Advanced and tick the Enable Network Discovery (UPnP) checkbox. Restart the game and tick the Automatic port forwarding checkbox in the Create Server dialog.
Please keep in mind that you also need to allow connections in your software firewall.
No. While there are currently no checks in place for this except comparing version strings, it is advised that you only run identical versions of the game when playing multi-player games. While the network protocol may not change, differences in unit behavior between versions can cause desynchronization between clients.
This is intentional. The replay is a raw order stream that is fed to the engine. Every change makes it incompatible so you can't watch replays from older versions.
OpenRA is a work in progress, and we are doing our best to improve performance.
Some hints on what you can do:
mono --gc=sgen OpenRA.Game.exeto use the new and improved garbage collector.
Still not getting better? To help us fix this, we will need some information from you.
perf.logfrom the logs directory above.
Please create a new bug report with the above information.
Please report yours to issue tracker with the following crucial details:
Get involved! There are a few ways you can do this.
No. OpenRA is completely standalone. When you run the game for the first time, it will download a copy of the game's files that it needs to run, or it will extract the game's files from the CD.
OpenRA is a clean-room implementation of the original Westwood engine based on reverse engineering the game-files without any disassembling, DLL injections or binary patches of the original executables. This is a completely Free/Libre and Open Source real-time strategy engine whose default mods depend on the original game files.
Since Electronic Arts have released both C&C and RA as freeware, we mirror stripped-down versions of the game's assets separately. This saves EA bandwidth by mitigating hosting to our sponsor's servers and further reduces the bandwidth required by packaging only the ~15MB of files that we need to run the game, instead of making everyone download the 700MB game ISO CD image. These game assets are not covered by OpenRA's GNU General Public License. We assume the files are available for individual use and may not be put for commercial gain.
You are right. This is, in fact, intended. OpenRA is not a clone. We have introduced many features found in modern RTS games. These changes include:
If you want the true legacy experience, visit our friends at Play Red Alert 1 Online and Command & Conquer Gold: Project 1.06. They use the Open Source CnCNet - Command & Conquer Online Service for matches and chatting via the internet.
There is also D2k+, a website dedicated to Dune 2000 modding and reverse engineering. Without their help the d2k mod in OpenRA would not be possible. They also offer patches and tutorials on how to play the original on modern computers.