Nov 19, 2015 - 10:34 PM
May I suggest that you go to the forum that is applicable to the build you have installed and post a query about the nature of the problem you're experiencing with a specific asset (provide the name of the asset and its KUID) together with the error messages shown in Content Manager? The forum members are pretty much guaranteed to come back to you with some helpful suggestions based on their knowledge and experience. Most will bend over backwards to help out any new member 'learn the ropes'.
Also, check out some of the excellent Fixit Tools and 3rd-party utilities (Such as AssetX and PEV's Tools, TARDIS scripts, etc.) that have been crafted by Trainz members to help fellow Trainzers deal with a myriad of common faults afflicting particular assets when importing them into new builds/ versions of Trainz.