5islander Posted April 25, 2015 Share Posted April 25, 2015 Installed P3d several days ago latest version 2.5. Used Estonia Migration Tool to install Ultimate Traffic 2. However, when opening UT get the following error: Error Loading Aircraft Assignments Invalid argument = value of '0' is not valid for 'selected index' parameter name : selected index Google search shows that some have had same issue but can't seem to find a clear explanation as to how to fix. Looks like some cfg files need to be edited?? using p3d v2.5 latest version of UT2 Estonia Migration Tool Windows 8.1 Only P3d installed on system....no FSX or FS9 Any replies greatly appreciated Link to comment Share on other sites More sharing options...
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