: Go to Window > Extension Manager and click Install Extension .
Open the LibFredo6 parameters via Extensions > LibFredo6 > Set Parameters . Set "Trace Level" to 0 (Errors Only) or 1 (Minimal) . Do NOT use level 3 for production work.
Ensure LibFredo6 6.3 is installed and loaded before the other tools. In Extension Manager, disable FredoScale and RoundCorner, restart SketchUp, re-enable LibFredo6, then re-enable the tools.
You installed a Fredo6 extension (e.g., Curviloft) without LibFredo6, or you have an outdated version. Fix: Install LibFredo6 v6.3 manually via RBZ or run the “Check for Updates” tool.
Get LibFredo6_v6.3.rbz from Sketchucation Plugin Store or Fredo6’s official site.