My main PC is current offline, but I've use my Mac and on that, both Firefox, and Safari show the same problem.  I also looked at it using a Windows Tablet with Internet Explorer 12, and the problem is there too, so I would say that the answer to your question is yes, the problem is there with different browsers.

It doesn't occur with my Chrome on Ubuntu but it does indeed occur with Firefox.    It looks like the text below the calibration button causes issues with the alignment of the crosshair on the image.  I will submit a fix for this shortly.

I think you might want to take a closer look at the Atlas scanner if you want to speed things up a bit.

Nice job Uriah !

Even if there is this problem, this calibrate helper version is a major step forward for Freelss I think.
The refresh button is realy usefull.
As I says previously, the last thing I would like to see is Laser threshold cursor under the test button and this is Christmas !

Thank you Hairu.

I put back the camera to the way it was before the update.  In other words it looks way off to the left (like in the first picture above).  However, when I do a test, now, the lasers line up with the blue line in the test image.

After I re-aligned it, I did an auto-calibration, and the calibration was successful this time.

The image below is a quick & dirty test, done at 5Mp, but with only 800 steps.  Throughout the scanning process I kept doing previews and watched for misalignments, and while there were a few missing areas (probably due to the lower number of steps and me fooling around with the preview refresh, the resulting scan is very good, and almost completely free of misaligned sections.

To be sure, this is a very well implemented software fix.

So the only problem I see with this update is the camera view cross-hairs being out of whack.

First of all, just prior to updating, I ran a fresh calibration using the original Atlas calibration tool, and my home made checkerboard pattern.  Then I updated to v.1.7, and went back to the camera to run the new calibration.

The first thing I noticed, is that the cross-hairs were now way off to the left, when just prior to the calibration were perfectly centered on the turntable.

I took a test shot, and that showed the blue line lined up with the lasers.  I thought that was weird, so I did it again, with the same results.  the test shot appears lined up with the blue line, even though the camera doesn't see it like that.

So I re-centered the camera, and did a test.  Even though the camera is centered, the test is now way off.

Last but not least, when I click on "Calibrate", I get "Could not positively detect which pixels corresponded to the XY plane"

I tried different lighting, different laser threshold, I tried the Atlas Calibration tool, and I tried my own checker-board pattern tool, every time I try to calibrate I get this error.