Can you post the full Jetlog file if possible, as even though it mentions the error, it does not state the exact error, which is usually found just above the first line you quote.
Shane
here you go. (I had to relauch trainz to get the error message to show.)
Jet vRRRRR.RR Build 1234.5.QQQQQ on Jul 2 2007 at 17:06:31.
Begin:
? 000000CC Warn 0:02.4 Trainz : InterfaceTextDB> failed to load compiled interfacetext file
? 00000E8C Warn 0:06.6 Trainz : TADDownloadStation::Read> queued urls: 0
? 00000A10 Warn 0:14.3 Trainz : TADDownloadStation::Write> 0
? 000000CC Warn 0:25.4 Trainz : GSNode::RequestMessage> source is not attached to router
? 000000CC Warn 0:25.4 Trainz : GSNode::RequestMessage> source is not attached to router
? 000000CC Warn 0:25.4 Trainz : GSNode::RequestMessage> source is not attached to router
? 000000CC Warn 0:25.4 Trainz : GSNode::RequestMessage> source is not attached to router
? 000000CC Warn 0:25.4 Trainz : GSNode::RequestMessage> source is not attached to router
? 000000CC Warn 0:25.4 Trainz : GSNode::RequestMessage> source is not attached to router
? 000000CC Warn 0:25.4 Trainz : GSNode::RequestMessage> source is not attached to router
? 000000CC Warn 0:25.4 Trainz : GSNode::RequestMessage> source is not attached to router
? 000000CC Warn 0:43.1 Trainz : OpenDownload> new task=0x12d620 refCount= 7992788
? 000007F8 Warn 0:43.1 Trainz : DownloadTask::ThreadProc> downloading with https
? 000007F8 Warn 0:43.1 Trainz : OpenDownload> new task=0x125542dc refCount= 307577756
? 000008D0 Warn 0:43.1 Trainz : DownloadTask:

oPlanetAuranLogin> logging in to planet auran
? 000007F8 Warn 0:44.2 Trainz : CloseDownload> task=0x12878054 refCount= 7986944 -> 1
? 000000CC Warn 0:47.9 Trainz : DownloadManager::Idle> killing failed/cancelled task 0x40803bb9
? 000000CC Warn 0:47.9 Trainz : OpenDownload> new task=0x40803bb9 refCount= 0
? 00000438 Warn 0:47.9 Trainz : DownloadTask::ThreadProc> downloading with http
? 000000CC Warn 0:47.9 Trainz : CloseDownload> task=0x83c3b0 refCount= 7986944 -> 290873601
? 000000CC Warn 0:48.2 Trainz : CloseDownload> task=0x0 refCount= 7986944 -> 6416129
? 000000CC Warn 0:48.2 Trainz : DownloadManager::Idle> killing failed/cancelled task 0x3d4da742
? 000000CC Warn 0:59.1 Trainz : router message from 0002 '' to 0355 '', message Permit, Granted
? 000000CC Warn 0:59.1 Trainz : router message from 0064 '' to 0000 '', message Signal, StateChanged
? 000000CC Warn 0:59.6 Trainz : router message from 0005 '' to 0000 '', message Signal, StateChanged
? 000000CC Warn 0:59.7 Trainz : router message from 0169 '' to 0000 '', message Signal, StateChanged
? 000000CC Warn 0:59.7 Trainz : router message from 0064 '' to 0000 '', message Signal, StateChanged
? 000000CC Warn 1:09.1 Trainz : *** DUMPING ALL THEAD STACKS ***
? 000000CC Warn 1:09.1 Trainz : *** STACK DUMP OF THREAD 0 ON GAME OBJECT Guilford GP40 #300 1, id 356 ***
? 000000CC Warn 1:09.1 Trainz : function
$void@FX_Loco::tractionMotor_sfx(), line -1
? 000000CC Warn 1:09.1 Trainz :
? 000000CC Warn 1:09.1 Trainz : *** STACK DUMP OF THREAD 1 ON GAME OBJECT Guilford GP40 #300 1, id 356 ***
? 000000CC Warn 1:09.1 Trainz : function
$float@World:
laySound(Asset,string,float,float,float,GameObject,string), line -1
? 000000CC Warn 1:09.1 Trainz : function
$void@FX_Loco::AirSound(), line 79
? 000000CC Warn 1:09.1 Trainz :
? 000000CC Warn 1:09.1 Trainz : *** STACK DUMP OF THREAD 2 ON GAME OBJECT Guilford GP40 #300 1, id 356 ***
? 000000CC Warn 1:09.1 Trainz : function
$void@FX_Loco::BPMonitor(), line -1
? 000000CC Warn 1:09.1 Trainz :
? 000000CC Warn 1:09.1 Trainz : Interface.PlaySound> asset not installed
? 000000CC Warn 1:09.1 Trainz : Thead Exception ER_Exception, line 96, file
? 000000CC Warn 1:09.1 Trainz : Stack Dump...
? 000000CC Warn 1:09.1 Trainz : function
$void@FX_Loco::AirSound(), line -1
? 000000CC Warn 1:17.6 Trainz : TADDownloadStation::Close
? 000000CC Warn 1:17.6 Trainz : DownloadManager::FlushDownloads> killing cached task 0x0
? 000000CC Warn 1:19.2 Trainz : TADDownloadStation::Write> 0
? 000000CC Warn 1:20.3 Trainz : TADDownloadStation::Close
? 000000CC Warn 1:20.3 Trainz : Averaged 32.082032fps over 34.349445sec
End.