Double Quote typing problem ( " " ), they disappear when defining any calculated expression
12 Advanced v2
Operating system version
Description of the issue
When defining an expression of any type in Filemaker 12 Adv. v2 (and on a 2009 iMac that has just been upgraded to Mt. Lion from Snow Leopard), when trying to type in a text string between double quotes (i.e., "like this") the typing of the second quote cause the first one to disappear and therefore the expression can't be saved. When using the devoted FM button for adding a 'null' string (""), the quotes simply appear briefly then disappear.
This Mac is used by a Mac novice coming off Windows.so outside Filemaker he may have randomly set some OS level setting that is contributing toward this behavior? Could his keyboard be sending some errant escape character? Does FM parse calculation input as you type?
Steps to reproduce the problem
Not reproducible on my 2012 iMac running up to date Lion.
On affected machine, type in two double quote characters and problem manifests.