Bitmaps from will not load into plugin RD Works8

I use the RD Works8 plugin with CDX7 in windows 10 for quite some time now. Since 2 months bitmaps in X7 misteriously won't appear in the RD Works (macro)plugin. While earlier this worked perfectly.   The plugin pop-up opens, but nothing appears in the pop-up screen.

Does anyone have any suggestion how to repair this? Extra problem: I've lost the initial install files for RD Works (incl the plugin - Oops).