Stevens Pass Box Cars Not Loading..AP file problems?

Hi
I'm just wondering if anyone has had issues with the Stevens pass box cars not loading on other routes. I built the Majestic Falls route and have had a few comments about box cars not loading when trying to enter a scenario. The route requires that you have HSC, Marias & Stevens Pass installed, my scenarios also require BN Wagon Pack 01. My subscribers have these but some get this error & some do not. I have no problems at all. I noticed that another scenario creator has also been asked about this same issue of the box cars not loading.
This surely can't be a problem with the route can it?
I'm taking a wild guess here but I wonder if this could be something to do with AP files being 'packed' or 'unpacked'?
My freight cars are 'unpacked', I wanted to add Krellnuts sounds to them, so I have created scenarios with them 'unpacked'. If a subscriber has a 'packed' version then this maybe the reason for the problem but why?
Not had any reports of other stock not loading from Stevens Pass.
Mark
I'm just wondering if anyone has had issues with the Stevens pass box cars not loading on other routes. I built the Majestic Falls route and have had a few comments about box cars not loading when trying to enter a scenario. The route requires that you have HSC, Marias & Stevens Pass installed, my scenarios also require BN Wagon Pack 01. My subscribers have these but some get this error & some do not. I have no problems at all. I noticed that another scenario creator has also been asked about this same issue of the box cars not loading.
This surely can't be a problem with the route can it?
I'm taking a wild guess here but I wonder if this could be something to do with AP files being 'packed' or 'unpacked'?
My freight cars are 'unpacked', I wanted to add Krellnuts sounds to them, so I have created scenarios with them 'unpacked'. If a subscriber has a 'packed' version then this maybe the reason for the problem but why?
Not had any reports of other stock not loading from Stevens Pass.

Mark