And Cannot be opened. Windows7 64bit. Latest builds of each and latest Nvida drivers. No UAC has worked all along until today. You can mouse over and see the entire scene if you open an existing file but these is no way to get it to open on taskbar. Probably a windows thing but looking here to see if anyone has seen this before

This will happen if you Close Poser Minimized.

You can edit the Poser UI to fix this, if you do not want to lose custom settings. Before Launching Poser, Open the UI Preference File and go to the end and look for Open Maximized and change from 0 to 1... or you can delete the UI Preference file

For those using older OS, just right click and select Maximize...  (Right Clicking in Windows 7 on the item in the Task Bar, and right clicking on the Program name in the right click menu then selecting Properties will allow you to change the Open Options. This works for some users... does for me on Windows 7 32, does not on Windows 7 64)

Thanks for the answer. Can't find the registery key. I don't have much in the way of custome prefs though, what is tha file name?

C:UsersAppDataRoamingPoser Pro2.0EnglishPoser UI Prefs_1920x1200.xml

Filename may vary depending on your screensize. Delete it and PP2010 will recreate it or modify it as ratscloset said

This is on Windows 7 64bit

You are both Awesome, thank you very much. I consider myself a computer person, but my Win7 64 setup is new and I had forgoten to turn on the "show system and hidden files" so my searches for poser*.xml were not giving me the right results yesterday. I assumed the appdata convention had gone away with Win7 I was wrong. This fixed me right up and once again proves there is nothing better than the Rendo community

I did also have to fix
AppDataRoamingPoser8.0English
to fix Poser8

You mean you can see poser in taskbar but can't get the window open on desktop, but you can see the library window?

I had struggle with this too. Closing poser from taskbar while it's minimized and next time you start it you can't get the main window open.

Try
-Select poser main window (not library) from task bar
-Press alt-key
-Navigate with arrow keys thru the menus (the dropdowns show up on top left corner of screen) and find the window menu and choose maximize.

Atleast this way I can restore the window without messing with preferences.

The maximize option wasn't available is why the problem. You could see your actors when you had a taskbar preview showing, but no way to open the window. The pref file did fix it up though.

I knwo there's no maximize option in taskbar.

What I ment was the old keybord shortcut to the actual window menus by pressing at and navigating with arrow keys. Atleast those for me those menus  (up on the top bar of the window, file, edit and such) were showing after alt and first arrow key press.
You just have to make sure poser main window is selected from taskbar even though it doesn't show.

right click on the taskbar "icon" doesn't have maximize option.