Yes this is still a big issue. It seems there are problems with the "Show File" which in the same application in a previous tersus-server version worked and also works in a "callable service", or using the studio.
We wanted to upgrade the operational environment to 1.3.29 or higher, but this is the showstopper. Next thuesday I will upgrade to 1.3.38 and test it again.
For best results, use the Firefox browser..