First off, the system does not recognize SN74LVC1T45 as a valid part number...
I tried to export the model ( SN74LVC1T45_DCK_6.bxl ) to Altium with Ultralibrarian.
The schematic symbol has some errors (A and B are inputs instead of I/Os). And I was not able to get the PCB footprint.
The DBV (SOT-23) version was successfully exported. Can you fix the DCK version?