Problems after server error

[Coolarm]

My web host had a problem and lost one of their drives, as a result they had to restore a number of my sites, a couple of which use cmsms. I've had various problems with the sites since the restore and have managed to fix most of the problems by reinstalling cmsms (cmsmadesimple-1.0.6) but I've been unable to fix the problem with the image manager.

When i go to the image manager within admin, I get the following error:

Fatal error: Call to a member function on a non-object in /home/oliverh/public_html/cms/lib/filemanager/ImageManager/Classes/ImageManager.php on line 106

and if I try and view some of the images via the file manager, I get the following error when I open a folder:

Warning: opendir(/home/oliverh/public_html/cms/uploads/images/Apr Jun 06) [function.opendir]: failed to open dir: Permission denied in /home/oliverh/public_html/cms/admin/files.php on line 245

Warning: readdir(): supplied argument is not a valid Directory resource in /home/oliverh/public_html/cms/admin/files.php on line 246

Warning: closedir(): supplied argument is not a valid Directory resource in /home/oliverh/public_html/cms/admin/files.php on line 247

Warning: dir(/home/oliverh/public_html/cms/uploads/images/Apr Jun 06) [function.dir]: failed to open dir: Permission denied in /home/oliverh/public_html/cms/admin/files.php on line 276

Fatal error: Call to a member function on a non-object in /home/oliverh/public_html/cms/admin/files.php on line 278

I have also lost most but not all of the thumbnail images. They appear to still be in the uploads folder but they are not showing up on the site.

Any help would be greatly appreciated

C