Reducing those attachments to 20 kB with Paint makes them too small. Please look at previous post where I listed the settings. It isn't the settings anyway.
I just took two good measurements starting from scratch and the third failed. No change of settings, only a move of one bass trap. Seems like either the software has a bug and I need to re-install; or the sound card has a bug and I need a new one (recommendations?); or Windows Volume Control is flaky.
Any suggestions from an experienced REW person? Please help!
PS: Details of Volume Control:
Play: Mic, LineIn, CD on mute; Play, Wave, MIDI on full volume
Record: All at full volume, LineIN selected