Hi.
I have the same problem and i find a solution with that way :
1. Open the task manager , select "APSDaemon.exe" and stop it with right click (need to do this once)
2. I find the file "APSDaemon.exe" to path "Program Files (x86)Common FilesAppleApple Application Support".
3. I move it (cut-copy) to "Desktop". You can choice any path to move it.
After that itunes open properly , as itunes cant find and run "APSDaemon.exe" to preselected path.
Note : With that way , i dont know if Apple Push services work. I guess not.
If you have synchronization problems , you could move "APSDaemon.exe" again , to default path.
I know that isnt the best solution but at least i can open itunes , and for now i dont have some synchronization problem or other.