What program are you referring to, Adobe Photoshop?
If you let us know the program, someone can Move your thread to the appropriate forum for that product.
Good luck, and please let us know a bit more.
Please tell me more details:
1. The version of Extension Manager (CS5, 5.5, 6.0, 22.214.171.124, ...)
2. The product and its version for which you want to copy plug-in. (PS6, ID6, ...)
3. The OS you are using (Windows 7, Mac 10.7, ...)
4. The ZXP you want to install. Where can I get it so as to reproduce your problem?
I resolved the problem. It was my mistake. Тhanks to all.