You've created an REW biquad output, copied and pasted it to the plugin and now getting the following error:
Warning!! Error input: Missing biquad value(s).
The biquad configuration was most likely corrupted and solving it will involve deleting your configuration to start from fresh. PLease do as follow:
a) Close the plugin
b) Navigate to the Mydocuments - > miniDSP - > plugin name
c) You will see a settings.xml file. Please delete it.
d) Reboot the plugin and you'll be able to configure your unit correctly.