The 79th edition of the Las Vegas TAC Chart was created in the wrong file format for the FAA's 8/22 chart cycle. If you downloaded the d-VC West product or Las Vegas TAC prior to 1400 EDT on August 29, 2013 be sure you download the updated files per the FAA's Safety Alert.
The iFlightPlanner Crew has posted updated versions of the TAC downloads for this cycle to both iFlightPlanner.com and iFlightPlanner for iPad. On iFlightPlanner for iPad simply head to the Downloads tab and tap "Check For Updates" in the lower left corner to access the new downloads.
We apologize for any inconvenience! Have a great weekend!
The iFlightPlanner Crew
PLAN. FLY. LOG.™
