I am developing a project in ASP.NET that I am then deploying to WSS 3.0 (Sharepoint). All ASP.NET controls (including the Atalasoft WebThumbnailViewer and WebImageViewer) are being nested within web user controls. These user controls are then deployed to Sharepoint within a 3rd party "web parts" container utility, Smart Part.

 My development cycle is to build, test, and deploy in ASP.NET; and then migrate to Sharepoint. This has been working effectively.

I am loading tif images from a byte array into the Atalasoft viewer controls. I have configured an image cache directory within my UserControls folder, and granted access permissions to that folder.

In ASP.NET, the viewers read in the byte array, write it to the cache (stamp files appear), and display them.

In Shareponit, the viewers read in the byte array, write it to the cache (stamp files appear), but no images display (blank pages in the WebThumbnailViewer--but with the correct number of pages per tif--and broken image icons in the WebImageViewer). Since the stamp files are being written to the cache, I believe this verifies my access permissions are set correctly on the image cache folder.

Any idea why these images are not displaying?