Problems with OverBridge and Analog Heat

Hi there,
Someone here have the older firmware of analog heat and previous versions of overbridge?
I have problems with the last firmware (v1.21) & the last version of overbridge (sometimes my computer reboots because of a crash caused by overbridge, pretty annoying). What is strange is when I dont plug cables into the input or the output of the analog heat, It works good (well recognized by the analog heat software & overbridge engine). But I cant use it without cables of course !!
thx