EXCFDT.FCL - Fixes HEW Output Window Buttons
Tweaking the FDT config files to swap FDT from using multiple tabs per project to a single tab for all projects stops HEW’s output window toolbar from disabling buttons. (The icons will be visible, but are grayed out and unusable.) The tweak is an update to the ECX config file (found in <HEW_INSTALL>\System\Sec\EcxFDT\EcxFDT.fcl) replacing it with the we've uploaded here.
Additionally, it is worth checking that you have the required default settings in your HEW.ini file (found in the main HEW directory). These should look something like this:
[ECX_STATUS]
Value1=4294967295
Value2=4294967295
(It’s possible that if you’ve deleted your .ini file for some reason they may be missing)

