The default transforms file used is AcroPro.mst, but you're referencing the installer from a directory several levels above. I suggest putting yourself in the directory itself before calling msiexec since you're using a relative path for the transforms file.
e.g.
cd Exceptions\APRO15.0en_US\Adobe Acrobat\
msiexec /i "AcroPro.msi" /qb
reference: