Edit: Detector Tools v1.4 fixes this issue! If you change the settings via Detector Tools, the detector will still show "Marker Enables" as "Modified" even if you have all sub category's on (which is "Default", but it will now alert to RLC's, which it did not do under v1.3).
I have noticed when I change the preferences via Detector Tools 1.3 and write them to the detector, "Marker Enables" always shows as "Mod", even though "Red Light Cameras", "Speed Cameras", "Speed Traps" and "Other" are all shown as "On" (defaults). It should show as "Default" since I did not change any of them. Beyond being mildly annoying, whatever the glitch is also disabled RLC alerts!
I noticed yesterday, because after playing with detector in Detector Tools, I went for a drive and the first RLC I came to did not alert at all. I turned around and passed it again, still no alert. I then drove to another RLC and got no alert from it either (these cameras are very near my house and alerted previously).
I pulled over and checked the settings ... GPS had a signal, RLC's and everything else in "Marker Enables" was listed as on, but the display on the detector showed as "Mod". I did a hard factory reset on the unit itself, and then manually changed my settings via the unit. Now "Marker Enables" showed as "Default". Everything in "Marker Enables" showed as on, same as before, but now the RLC's alerted again.
I confirmed this behavior tonight. I changed the settings again via Detector Tools and saved to the unit, then checked the settings using the RD itself, and "Marker Enables" showed as "Mod" despite every sub category being turned on. I then did a hard factory reset again, opened detector tools and clicked "Factory Reset" and then "Change" to write them to the detector. I then checked the settings using the detector itself, and sure enough, ""Marker Enables" showed as "Mod" despite all sub category's being on ...
So it seems clicking the "Change" button in Detector Tools 1.3 causes the detector to show "Marker Enables" as "Mod" even if they are not changed from factory defaults, and disables detecting of RLC's completely.