<font face="Arial, Verdana">Looks like you are using due board. That variable is only set if fan is defined, so you need to replace that line with</font>
<font face="Arial, Verdana">#if FEATURE_FAN_CONTROL</font>
<font face="Arial, Verdana"> if (fanKickstart) fanKickstart--;</font>
<font face="Arial, Verdana">#endif</font>
<font face="Arial, Verdana">#if FEATURE_FAN2_CONTROL</font>
<font face="Arial, Verdana"> if (fan2Kickstart) fan2Kickstart--;</font>
<font face="Arial, Verdana">#endif</font>
<font face="Arial, Verdana"> </font>
<font face="Arial, Verdana">This will be included in next release but we need to test some changes there before releasing it.</font>