I recently installed this upgraded version of Truespace and am quite happy with the improvements in the Beta 8 version. Before I use to find myself working between TS 7.6 and 7.61 Rosetta. Changes made to 7.61 were causing file read errors with both Rsobj model files and scripts written specifically for 7.61. This alone was frustrating me quite a bit until someone suggested upgrading to 7.61 Beta 8. Now I only need to use one verses two different versions of Truespace. I still have access to Truespace 6 and the Rosetta version of TS. I plan to remove both TS 7.6 and Rosetta standalone version 7.61 as I don't need them now with 7.61 Beta 8; it alone offers all the features of the other two modelers. If you want to give Truespace 7.61 Beta 8 a try then here's the download link for it.
Download link for Truespace 7.61 Beta 8
If you already use TS 7.6 then remember to copy your existing library folder to the new 7.61 installation so you won't lose any hard work you've done so far with 7.6. Afterwords, if you need to free up some hard drive space then you can always uninstall both TS 7.6 and TS Rosetta 7.61, as TS 7.61 beta 8 has both 7.61 and TS version 6 already.