Well, the high severity virus detections continue.
So far, in addition to starting this topic here in the forum, I have contacted avast support and MBAM support. Not surprisingly (to me at least), each says it's the other's fault.
MBAM was able to replicate the detections, and escalated the issue to their QA people who said, "We've tried all options and tweaks and it's their end that needs correcting. There is no amount of coding we can do to correct this as we tried, we don't have the issue with any other antivirus or antimalware for that matter."
avast told me, "These detection are done by malwarebytes. Some problems may arise if you use more antivirus/antimalware solutions. It involves more detection that makes it even more complicated. We do not know why it is not possible to exclude it (it may be other downloading data then excluded one, it can be detected in the memore etc.) There is nothing you can do except using just one antivirus solution if it´s avast! detecting malwarebytes service in the memory."
What do you guys think? I think it would be nice if they worked together, but then again, hardly anyone has experienced this detection, so there is definitely no push or motivation to straighten it out.