This appears to be a bug in the dialog module, where as it does not run request callbacks on PRACKs.
I have attached a small patch that I tested and seems to fix the issue.
Run dlg req callbacks on pracks
Thanks for the patch, indeed the PRACKs where not being translated.
Patch was applied on trunk and 1.8 branches.
Sign up for the SourceForge newsletter:
You seem to have CSS turned off.
Please don't fill out this field.