I had this issue some months ago, someone notified me that a power of 2 for the width/height seemed to be ok. Try delving back into the old B+ topics.. should be around october/november I think..
[edit] http://www.blitzbasic.co.nz/Community/posts.php?topic=39937
PS: can you create 9 images of 1000x1000 and place them next to eachother (to form a 3000x3000 image again) instead? :)
[edit] http://www.blitzbasic.co.nz/Community/posts.php?topic=39937
PS: can you create 9 images of 1000x1000 and place them next to eachother (to form a 3000x3000 image again) instead? :)