Re: Mousetrap plugin consistently stops working.

Yes, some programs interfere with PPro mouse hot keys.  I cannot do anything about his directly as it depends both on how Windows implements the so-called mouse hooks that PPro relies on and on whether that other application follows all the rules that Windows specifies in order to allow applications to cooperate in their use of mouse hooks. 

 I do know that internally mousetrap uses the "New (LL) Intercept" method, so you could try using that method in PPro if you are not already by checking the corresponding checkbox on key setup dialog and restarting ppro without keytrap.  But PPro will likely fail eventually too if it fails with chrome.
 

 I do find I can use both middle and middle hold in chrome to show different menus,  so it cannot be that chrome eats middle by itself.  So for middle chord it may depend on order of chording, ie which button you push first..
 

 I personally find mouse gestures with the back thumb button (b4) to be a reliable way of getting more mouse keys, especially since I only need a few of them so I can stick to simple, reliable gestures:  stroke up, i (stroke down), BS (stroke left), sp (stroke right).  
 

 One final point  technical point, not for the faint-hearted:  For LL Hook, Windows itself will disable the program's hooks if the program does not respond quickly enough to a mouse event.  PPro tries to avoid this situation by using a separate thread for responding to the hooks, but even so it fails to respond quickly enough on occasion.  I am still trying to figure out how to avoid this.  It does happen only rarely for me, and there is a workaround meaning it is not an urgent issue for me (the workaround is to install more than one copy of PPro in separate exe folders, all setup to refer to same pcf folder, and start a new exe if current one stops responding).