404 Error on Image Transforms Transformed Images are failing to load with a 404 error  For example: 

http://mysite.com/index.php?p=cpresources/transforms/382&amp;x=v0nGRK3Qr 

This happened after I swapped the db.  So, everything had previously been working.  

Also:  


My images reside /public_html/mysite/img/posts/
BUT, Update Asset Indexes generates The path of your source "Main Post Image" appears to be invalid And, none of the images load when I try to view Assets in cp.  
I can access the image from the public URL to the assets is http://www.mysite.com/img/posts.  And, I can access the original uploaded images here. 
I assume the path to my images (which I understand can be different from the URL) is the problem. 
Path is current set to /mysite/img/posts/'.  I have tried multiple permutations - nothing seems to work.


Help/Thanks
/mysite/img/posts/ is an absolute path pointing to the root of your drive mount.

You probably just need to make it relative.  i.e. either mysite/img/posts or ./mysite/img/posts.