The touch screen launching gesture does not always work on top of other applications.
ThinkPad computers running SimpleTap version 1.0
The touch screen launching gesture will not work on top of other touch-optimized applications, such as Paint. This is by-design, so as to not interfere with other touch-optimized applications. The touch screen gesture will also not work on top of a 32-bit application that is being run on 64-bit Windows. There is currently no solution for this limitation.