Hi Eric,
You have discovered a bug in the our setup.
I was able to reproduce the issue using this setup: MPC5744P evaluation board and IXXAT USB2CAN and the 500kb speed

I might have a quick and dirty fix for you until we will have a more stable hotfix. This fix works only with this setup which is similar with yours

Workaround:
- go to {toolbox install dir}\mbdtbx_MPC574xP\mbdtbx_pnt\mbdtbx_pnt\ folder and make a backup copy of mbdtargetmainlibpnt.tlc file
- copy and replace the file attached here in the {toolbox install dir}\mbdtbx_MPC574xP\mbdtbx_pnt\mbdtbx_pnt\ folder
- delete any previous generated model and build again the application.
Please confirm if it works or not in your case.
Thank you!
Daniel