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<P ALIGN=LEFT><FONT COLOR="#000000" SIZE=2 FACE="Trebuchet MS">I've modified the n-</FONT><FONT COLOR="#000000" SIZE=2 FACE="Trebuchet MS">back task that was so kindly</FONT> <FONT COLOR="#000000" SIZE=2 FACE="Trebuchet MS">posted by Susan Campbell. It was running fine, but in my most recent revision I added some</FONT> <FONT COLOR="#000000" SIZE=2 FACE="Trebuchet MS">additional conditions and</FONT> <FONT COLOR="#000000" SIZE=2 FACE="Trebuchet MS">I have started getting the following error when I run</FONT> <FONT COLOR="#000000" SIZE=2 FACE="Trebuchet MS"> my</FONT> <FONT COLOR="#000000" SIZE=2 FACE="Trebuchet MS">experiment:<BR>
</FONT><FONT COLOR="#000000" SIZE=2 FACE="Trebuchet MS"></FONT><BR>
<FONT COLOR="#000000" SIZE=2 FACE="Trebuchet MS">-999: Factor Error:</FONT><FONT COLOR="#000000" SIZE=2 FACE="Trebuchet MS"></FONT> <FONT COLOR="#000000" SIZE=2 FACE="Trebuchet MS">History index out of bounds in FirstTwoNoMTrialList</FONT></P>
<P ALIGN=LEFT><FONT COLOR="#000000" SIZE=2 FACE="Trebuchet MS">I'm not sure what the History</FONT> <FONT COLOR="#000000" SIZE=2 FACE="Trebuchet MS">index is or how to approach trying to fix this.</FONT></P>
<P ALIGN=LEFT><FONT COLOR="#000000" SIZE=2 FACE="Trebuchet MS">I'd be grateful for any ideas anyone might have.</FONT></P>
<P ALIGN=LEFT><FONT COLOR="#000000" SIZE=2 FACE="Trebuchet MS">Karen Nolan</FONT></P>
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