Install fatal error in admin - FTP upload failed

Hi I have made a fresh install of Zencart and the shop appears ok but I am getting the following message in the admin end:

Fatal error: Cannot instantiate non-existent class: messagestack in /homepages/17/d171565386/htdocs/test/store/includes/autoload_func.php on line 79

I have tried to make sure all the files are uploaded ok...

Can anyone suggest what I might have missed??

Thank you

Sorry I tried reloading (again) the messagestack file in it seems to be ok now!

Thanks for the update ...

This can happen on occaision when uploading files ...

Choosing a good FTP program helps a great deal ...

I have been spoiled with FlashFXP the last 2-3 years and never regretted the change ...

1 file failed to upload on me once in that time ... silly me the permissions were 444 ... :lamo: