If you ever made a back-up of your settings, check this folder and see if the files are recent enough to use.
To restore your menu's, you need to restore the file ...\System\ButtonActions.XML from your backup or from another system.
The number of pages is stored in ...\System\Config.XML in the parameter <TOTALPAGES>. In your case, I expect this value is set to 1. Normally this parameter is set dynamically, but now it is out of sync, you might need to correct it manually. Check in ButtonActions.XML what the highest instance is of the parameter <MAINxx>. When xx is 36 for example, the value you need for <TOTALPAGES> is 36 / 6 = 6.
Another way is to rename the ...\System\ folder to something like ...\SystemSaved\ and start Centrafuse. Because Centrafuse can't find any config files, it will create new versions and will lead you through the first fun procedure.