Well this topic was posted before, and I got some help, by moving the subtool that im working on to the bottom. But I have over 13 subtools, and this is just slowing me down…Does anybody know how to fix this.
Not sure what the problem is. You mention another thread where you found some answers, but don’t link to the thread so I can see what you’ve already looked into and what answers were given already.
Please provide more information as your issue isn’t understandable 
@ beta_channel
This is the link to the other thread… http://www.zbrushcentral.com/showthread.php?t=111588
I tried updating my wacom drivers, and disabling auto swtich subtools. But it still doesnt help, I also tried moving the subtool that Im working on to the bottom, that worked for a while, but because it keeps switching it isnt easy to selct the one I want to work on.
@Totyo
The issue im having is that as soon as I start up zrush, and load my zbrush file it cycles through my subtools, and automatically goes to the last one, and as soon as I try to select any other subtool, it switches right back to the last one.
That one is new to me. I don’t believe I will be any help.
If no one else responds you could try submitting a support ticket to see if anyone else knows what the dilly is.
It’s because you have something somewhere on yor computer which simulate the arrow down key. It’s the ZBrush default shortcut for this operation.
What you can try is to assign a new shortcut for this operation: Press CTRL+ALT and click on the “Select Down” button in the SubTool palette. Then type on your keyboard a new key. When done, go in preference and in Hotkeys, click on Store.
Restart Zbrush and let us know if it’s still the same.
You’re welcome !
But you should find why the down arrow key is constantly press on your computer (checkyour shortcuts in the Wacom control Panel)