the new openttd-version requires the new version of opengfx. opengfx-0.4.4 is in tree,but the build doesn't enforce any version. If the game is started with an old version of opengfx it runs, but reports an error during startup and display errors may occur. Reproducible: Always Steps to Reproduce: 1. build openttd with openmedia USE-flag
Created attachment 309455 [details, diff] ebuild patch
Fixed in the cvs. Thanks for the report.