Album pictures gone walkabout

[محروم.كوم]

After a server move (Windows to Linux) the album photos (which are stored in the file system) are not showing up. They are physically there* but when I try and rebuild thumbnails I get the following error for each photo. The path in the error is correct. Anyone any ideas - Thanks

PHP Code:
Album Picture Manager Processing: 269 Warning: fopen(/home/default/mysite.co.uk/htdocs/albums/0/269.picture) [function.fopen]: failed to open stream: No such file or directory in [path]/includes/class_image.php on line 333 - did not match any documents.

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