Controller not playing voices

Hello, impact lx 49 sometimes plays EW choirvoices and more than not doesn't. It will always control the dials and volume controls but will not play the EW voices piano. I get midi activity lights. In controllers I will select impact lx 49 but it reverts to ACT immediately. What am I missing here. Can I disable ACT? It will not record midi either
TIA salsamac

Thanks, I have all that and it would play and record midi sometimes. Then it would stop. I would have to redo all the installation to get it to play again. It is working/connected because it operates the faders etc in sonar and the softsynth. It just won't play the voices when I press the keys. something is going on with the channels routings that I cant figure out. You see on image 2 on the link under  Controller surface settings? when I select impact 49 and apply, if I open it back up it says Act, not impact. How do I get that to stop doing that, or is that the way ACT operates?
Thanks salsamac

Splat uses Command center to un install. 
 
Are you sure you have the setting for the input and the output of the midi track pointing correctly.
 
I = Input you normally select your controller and use OMNI 
0= Output this you select the VST instrument you wish to use
C= Channel select the channel
B= Bank select the bank
P= Patch select the patch.  
Bank and patch can be set to "NONE" and you select the sounds using the GUI for the VST. 
 
Thee are 2 places to select the input/output options. 
 

 
 
 
 

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found uninstall. right click on it. hmm

i reinstalled splat and it works now but still a weird looking letter is there under ACt instead of saying impact lx 49

oh well. waiting on my dongle for my cross-grade test for cubase pro. will checkout others also. I don't want to be a coroner, nor an undertaker/embalmer. Too spooky to be in the graveyard for burial also. If anything happens after this it may be like we are Dr Frankenstein, bringing the dead back from pieces.
Peace out. salsa