A unexpected failure: externalStrippedSwfs\assets\.... .swf(The system cannot find path specified)

Dear friends,

iam creating an app with Adobe Air 33.1.1.476, during compile iam getting these attached error. I have valid licence from Harman. Previously i used to compile all the air version it was working fine and generating externalstrrippedswfs, but when i start doing its giving below error. Pls help me to solve this.

iam getting "unexpected failure: externalStrippedSwfs\assets.... .swf(The system cannot find path specified) " error.

i tried all the version of sdk iam keep getting this, i need to solve this immediately, client is waiting. friends pls help me to solve this.

Please note that those folders & swf's are available in assets folder.

please help me to solve this.

Thanks in advance,
Syed Abdul Rahim