The problem isn't just with LoadRTF, it's also with the RTF output that is generated from Cute.  Apparently, they know it's broken and have no intention of fixing it until the parser is replaced when v6.1 comes out.  Whenever that may be...

RTF Not Being Generated Correctly http://cutesoft.net/forums/thread/32076.aspx
RTF Issue With Formatted-Text Alignment http://cutesoft.net/forums/thread/32077.aspx
RTF Bullets Not Being Exported / Loaded Correctly http://cutesoft.net/forums/thread/32079.aspx