Missing mesh after moving project to unity 5

Hi
Maybe a stupid and already answered question (try to search in these forums with no luck...) : i have a fully working project in unity 4.5.5f1but wanting to move it to the latest version of 5. Everything went ok except now i'm missing some mesh in two of my scenes...lot of them... Try to export the whole project and reimport in unity 5 but same problem...Any help or guidance appreciated
Thanks

 

nobody can help please ?

 

Any editor errors? What does "missing some mesh" mean? If it's failed to import, I imagine there is some error message provided.

 

Hi
No errors in the console. Just when i'm importing the whole project to unity5 then opening one of the scene some meshes are missing (just said missing in the inspector but no console message...)

 

Anyone with the same problem?

 

So nobody got this issue in the past or? I need to contact someone directly at unity for this? I'm on a subscription plan and find the forum not always enough for a non free software...thanks

 

Ok well writing to myself now
Will try to move to 4.6 first then to 5

 

Ok the problem is now solved. For unity 5 you need the latest version of Maya if you are using .ma files (instead of obj or fbx) in your project