Your flight school didn't have an AIP!!! They let you go into an Air Law exam without one? Holy Smokes!!! Alarm bells are ringing mate.
How could you even study for the exam without an AIP? Half of the exam is based on rules/regs/proceedures out of the AIP. - I would be angry at your flight school, not the muppets at ASL.
For the record i picked up a few in-accuracies in my CPL exams (Spelling mistakes, wrong aerodrome id's, bad grammar) and i made note of all these and presented them to the examiner at the end of the exam. She was a bit unsure of what to do but forwarded them to her supervisor, and on each occasion i got an email from the head honcho of ASL thanking me for bringing these things to light and advising that said questions had been amended.
Good luck with the appeal mate, i am keen to know what the process and outcome is.
povopilot