c99koder posted some info on the CV forums of a bug that was stopping saving in FrotzDC 1.0, here’s what he had to say about it:

“FrotzDC 1.0 has a serious bug preventing you from saving. I have removed the CD images from my site and uploaded a binary with a temporary work-around for the problem. This new binary will not use the new file selector during load and save operations, instead it uses the original “Enter filename:” prompt and will only allow you to save on the VMU in port 1. New cd images will be created once the file selector has been properly fixed. FrotzDC 0.6 and below are not affected. More information and updated binary available at http://www.c99.org/dc/.“