Error Initializing Video Stream

I’m using Blender 2.61 and I’m trying to create a video from the stills that I made using the same version of blender, but I keep getting that error message.

What codec settings are you using ?
What other codec settings have you tried ?
Are you using the presets ?
Do any work ?
Also the usual basic info, Operating System, other relevent infomation etc etc

http://www.google.co.uk/search?aq=f&ix=hca&sourceid=chrome&ie=UTF-8&q=blender+2.5+Error+Initializing+Video+Stream#sclient=psy-ab&hl=en&source=hp&q=+site%3Ablenderartists.org+Error+Initializing+Video+Stream&pbx=1&oq=+site:blenderartists.org+Error+Initializing+Video+Stream&aq=f&aqi=&aql=&gs_sm=e&gs_upl=9787l11429l0l11773l12l10l0l0l0l5l220l1382l5.2.3l10l0&bav=on.2,or.r_gc.r_pw.r_cp.,cf.osb&fp=8bc8cd61568b364&biw=2104&bih=1256

Wow, sorry…

Win7
H.264
None
Don’t know

And it works now. I restarted blender and tried again. This time, it worked without a hitch. I guess I got into “New Version Panic” (NVP) mode. <sigh>

I think NVP should be its own psychological diagnosis. lol