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FS2004 MakeMDL 'access denied' on large batch exports

GarbageHaul85

GarbageHaul85

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unitedkingdom
Hi there,
When processing large batches of models in a bgl library, usually from FSX to FS9 format, I often get issues of the path to MakeMDL being denied, and the conversion stops and closes MCX. I don't understand why this happens, since with single models I don't get issues, it's only when either using batch process for several bgls, or even just exporting a library with 50+ models. I've uploaded the error as prompted, but the console or anything doesn't provide good information on why this happens.

The model number at which this happens is often arbitrary, sometimes it'll process the library fine, other times it won't even make it past 20 objects. It took over 15 attempts to get a library of 1200 objects exported to FS9 format, crashing anywhere between 100 and 1100. I wonder if its to do with MakeMDL processes opening so quickly in succession that Windows blocks them from running, since it already sees it?
1782772885053.png

All help is appreciated, as this has been plaguing me for some time.

Regards
 

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I can’t imagine it’s very hard to reproduce - just needs a large library bgl. Try the default FSX autogen bgl from scenery/global, it took 7 tries to get that over.
 
Are you using the export scenery dialogue to write the FS2004 BGL or are you using the batch convert wizard?

I just exported the autogen.bgl from FSX to FS2004 three times, but no error yet. I will try a few more times later on, but for now I got a bit fed up with the flashing MakeMDL window interrupting any other work.
 
I encounter it with both batch convert and standard export scenery. It shouldn't be a path issue either, since my MakeMDL is in C:\FS2004SDK. No logs or anything show what's happening, it just abruptly ends after a pretty random number. I don't get it with FS2004>FS2004, only FSX>FS2004. Did the uploaded file help at all?
 
Hi,

The uploaded error report does not provide a lot more information, as this issue does not come from the object but probably from the system.

It should not really matter from which format you imported when you export to FS2004. So weird that it only happens when you import from FSX.

I'll try to do some more testing here.
 
Which version of ModelConverterX are you using?

I tried to export the autogen.bgl a few more times, but no error yet. Looking at the stack trace in the error report I can't really understand which bit of the code is throwing the error, the access denied comes from a delete directory action, but that is not being performed in the function where the error is thrown.
 
Latest build, v1.9.2026.0627. I have experienced this since 1.7 though, my solution was always to just put up with it but its incredibly frustrating with large batches. Windows event viewer isn't really helpful either, it doesn't display much.
 
Could it be your virus scanner is locking the files ModelConverterX works with?

In the background ModelConverterX makes a copy of MakeMDL to a temp folder, where it then places the custom MakeMDL.parts.xml file. After compiling these temp files are removed again. But those delete actions are not in the function that throws the error, so that puzzles me.
 
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