Sony Vegas Pro 11 Grey screens

Recently I noticed this problem from Sony Vegas Pro 11 (latest version..its updated )
after a month or so not opening it as i was not editing any video then right now i opened it then inserted video's etc and transitions but when i open prompts its all grey screen just like in the screen shot i attached like media generator, options window its all grey

Thanks in Advance :)

system specs
Windows 7 Ultimate OS
Processor : AMD Athlon(tm) II X2 240 Processor 2.80 GHz
Installed Memory : 2.00 GB
System Type: 32-Bit
HDD: 148.8GB

Video Card:

NVIDIA GeForce 210
Approx. Total Memory: 1241MB 554624_3265213318932_2146451952_n.jpg

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