Is extjs 4.1 backward compatbale with extjs 4.0

[mboreback]

I like to move to extjs4 for my architect projects, and just like to understand if architect generated project will get problems.

[Phil.Strong]

Ext JS 4.0 projects built with Architect can be converted to Ext JS 4.1 projects (coming w/ 2.1)

Do Ext JS 4.1 projects work running on 4.0 ... not guaranteed. Note that minor revisions typically don't affect a lot of the API. In general though, I wouldn't revert back to a previous version unless you had to. Especially in the case of 4.1 vs 4.0 for the performance improvements alone.

Hope this helps!

[ssamayoa]

Do Ext JS 4.1 projects work running on 4.0 ... not guaranteed.

I think he is taking about the opposite: run 4.0 application with 4.1 framework.

Regards.