Using recipe pages in Mantle manuals can easily result in crashes. Opening a manual which contains a recipe for an item which gets defined by a Pulse results in a crash. Handling for these cases should be added to avoid the need to add dummy recipes. An example of this can be seen in Tinker's Construct. Disable the Armor pulse, open the first manual: crash on the page detailing the drying rack.

Corrected within new manuals.

i'll take a look after work tonight

if you have any logs handy please provide them

Crashlog with current dev versions of TiC and Mantle, armory module disabled: http://pastebin.com/FypkNSWG

the manual code will be re-written in 1.8 to be pulse aware