How to protect my swf files from decompile?

Dear Friends,

Greetings! I want to protect my swf files from decompile and image and animation stealing. Please suggest me the ways to do it. Already I was trying with some as follows:

1) swf encrypt 7 I purchased It was working fine. but suddenly they closed it is not working now.

2) I tried with leawo swf encrypt - its encrypting but not working for my files. it is crashing my files where I used 3d tweening.

3) I tried trial version of swf protection its not working for my frame, like iam loading all my swf in a frame, swf file is working but frame is not working..

please suggest me a right ways to protect my swf files....

Thanks in advance,

Regards,

Syed Abdul Rahim