Whatever was in the latest updates solved it, i still get a red error message but the window does exactly what I want. Thanks for working on this and providing such a useful extension for free!

Here is that attempt, noting that the process you laid out is what I tried originally.
image1, image2, image3, image4, image5. I tried it as well with manually entering 1920x1080 to no avail, but those screenshots were too large for the one hoster that's not blocked where I am. I can upload those screenshots later if desired.

I appreiciate the quick reply. I am not a web developer, so I have a hard time understanding this phenomenon. If the window size I desired was too small, why am I able to manually resize the window using the edge handles? I even get that error message when I try to resize to 1920x1080. I am running three displays, and my main laptop display is 3200x1800, with my Windows 7 scaling factor set to 140%. 1920x1080 does not work if I use an old preset, a new one, or manual entry from the bottom of the menu. Page zoom does not seem to make a difference in the outcome. If at all possible, I would prefer to just downgrade to a previous version, as it worked perfectly for my use case.

I'm having this problem as well. Since it updated yesterday with the new interface, I cannot use my presets, and it says the same message:

• the target height is lower than the minimum allowed by your browser window
• the target width is lower than the maximum allowed by your browser window

this renders the extension useless for me, as I was using it to put a window on the lower half of a 90 degree rotated screen