This information is not enough to understand actual scenario when program doesn't work. The current alpha has some known problems however 'the window just freeze' is out from this list.

I know, did not realized that you are Kirill Gavrilov. I was thinking that maybe the sview2011 alpha was just currently a plugin and that the normal software was still dummy.
So now with your answer I now know this it not the case.

I tried with 12.3alpha22 and 12.4alpha5 versions of your software.
What's happen exactly:
When I launch sview image viewer (via shortcuts into the start menu folder), a window appear: "sView - Dual Renderer plugin" with nothing into it, no menu, except a white background. If I move another windows of another app over it, the sview window is still displayed identically, without traces of the other app's window on it.
The second display overlay does not appear at all.
The sview window can't be resized, the arrow when the mouse is over the border of the window appear but have no effect.
On first times it just seem the window does nothing, no error messages. The window don't want to move. After few seconds and trying to select it multiple times, "(Ne réponds pas)" (I think in english it would wrote "Do not respond") is displayed on the side of the name of the window. And the window can be moved and resized.

It looks like sview is in a infinite loop state: On the task manager, I right click on sview then on go into the process, I can see that sView.exe take 25% of my quad core processor. If I set his affinity to one core, it use 100% of the resources of this core.

If I try to open a jps with sview, I have the exact same result, the window is not resized to match the picture I tries to open with it.

Same result with movie player.

If I set sView to anaglyph, then I get the same issue, but obviously with "Anaglyph Renderer plugin" into the title of the window.
Same issue with "autodetection", "Diagnostics", "Failsafe", "Movie Player 32bits" shortcuts.

If I search the files that shortcuts lunch, I found that they launch amd64 sview. I launch "stTests all", mutex and fillrate test works, but when the dummy window is displayed, I get a windows error message "stTests.exe has stopped to works". With the sttests that is in the sView main directory (32 bit I assume), mutex and fillrate works, there is no crash with the dummy window but it freeze with same symptoms than previously.

Same symptoms if I directly double click on the 32bit sview.exe with the "StWindows" name. WinXP SP3 mode changes nothing except that I have to use the task manager to close it.
If I double click on the amd64 sview.exe, there is simply no window displayed, the application seems to be closed instantly, sview.exe appear only a few seconds into the task manager.


My system:
Windows7 pro oem 64bit.
Asus P8P67 R3.1, core i5 2500k, 8Go RAM, no over-clocking.
nvidia GTX570, tried with 295.73(whql), 296.10(whql), 301.24(beta) drivers.
Asus xonar essence STX
Bitdefender internet security 2012 (tried in "game mode" and normal mode).

Very strange... did you tried to offload Bitdefender entirely (temporary)?
Any other influence software like iZ3D drivers installed?
sView was (re)installed clearly (uninstall -> install) or over existed version?
Also you may try to remove some outputs from 'StRenderers' folders (leave only StOutAnaglyph for example).

I did not try to disable heuristic detection on bitdefender prior to post.
After adding sView.exe and StTests on white list, it works fine.

I don't understand why my anti-virus does not like sView. I wasted time for something easy to find.

And sview is much more user friendly than stereoscopic player.
It just lack some help file for shortcuts and hidden features.

Modern antivirus software becomes every-day problem to their users (yes that not only bitdefender, though I didn't heard problems like this).
You may report the problem to bitdefender support and maybe them fix the problem.

Yeah, I had this problem with IZ3D and Comodo. It made it so every single game (and other programs) would crash. However, in this case, adding IZ3D to the whitelist did not fix it. I had to uninstall the Comodo program. Kind of annoying.

Yes but iZ3D does D3D calls interception and code injection.
I can understand that an anti-virus detect the activity of iZ3D driver as something suspicious.

EDIT:
This time I report a real bug:
When using the vertical mirror output, the secondary window coordinates are not mirrored so that, it can be use only if the original window is on the center of the screen.

Ahh... that was stupid misprint. Please try current alpha build.

I downloaded 12.4alpha16 and works fine.
Thank you.

I like sview. I use it now instead of stereoscopic player for S3D pictures viewing, but I still use stereoscopic player for S3D videos because they use some kind of video rendering witch is not affected by frame mis-sync between the two screens.

Sview doesn't work desktop or in browser. I just get a white/grey screen for both.