It simply means that the project was created in a newer version than the one you have and you cannot open it. There is no way around that.
As Mylenium says, it looks like you're trying to open a project that was created with a newer version.
What version of AE do you have?
I´m using CS5 version at first, and another CS5 version later (can not
I´ll try to resolve in other way.
Thaks, It´s very kind of you for response.
2015-01-13 18:24 GMT+01:00 Szalam <email@example.com>:
Alert says: created by Szalam
<https://forums.adobe.com/people/Szalam> in After Effects - View the
full discussion <https://forums.adobe.com/message/7091940#7091940>
Your problem lies in not understanding that After Effects CS5.5 (10.5) is an entirely separate version from After Effects CS5 (10.0).