well, this isnt much important for a single pc but i do run steam with my external harddisk, sharing same steam storage with my desktop and laptop. (is like im using my steam as portable steam)

the prob is, i have 64 bit OS with my desktop and 32 bit OS for my laptop. (i had issues with my lappy with 64 bit, especially ram usage).
whenever i update facerig while steam is running in my desktop (64bit), i cant launch FaceRig with my laptop. but if i just delete FaceRig.exe and let steam check for intergrity check (the file checking mechanism) with my laptop (32bit), i can let it work again (of course is also working for my desktop).

although i can live with FaceRig in 32 bit, but sometimes i feels annoyed whenever an update comes while in desktop, i just cant run it with my laptop everytime. if i just update with my laptop, i cant use steam with my desktop while updating. (this is why i may ignore updates as well)

so, options like 32 bit and 64 bit execution would be really helpful. (may also apply to someone else too)

*if this was actually implemented, sorry because i havent update yet