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Noldus Knowledge Base

Check out detailed explanations on how to make optimal use of your Noldus installation. You can filter on the product you’re using. Looking for quick answers to common support questions? Check out our FAQs

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Setting up the CatWalk XT 10 walkway: calibration and detection settings

Setting up the walkway for use is a three step process: defining the walkway, calibrating, and detection settings. These steps are not difficult but can make a big difference for the quality of data and how much work you will need to do.

Related to CatWalk XT

EthoVision XT Settings are Locked, Unable to Modify

Once data has been acquired in EthoVision using a specific profile (Arena, Trial Control, or Detection), they become locked from changes (red arrows). You can duplicate these profiles and edit the new copy.

Related to EthoVision XT

CatWalk XT classified footprints are grayed out

Footprints that were previously classified/labeled show up in Classification, but some/all are grayed out in Run Visualizations and Run Statistics.

Related to CatWalk XT

The Observer XT Error Id 12524 – Event Log Read Failure

The message indicates that the event log files cannot be found. These files are distinct from the project file (the .vop file) and if they have been separated from the rest of the project, this error will occur.

Related to The Observer XT

EthoVision XT file error Id 10034 Experiment cannot be repaired

This error occurs when you try and open an experiment in EthoVision XT and it reports error id 10034 "experiment cannot be repaired"

Related to EthoVision XT

I cannot find my project’s VOP file. I see a file that looks like it might be it, but I am unsure

This issue involves a situation where you are attempting to open a project in The Observer XT via the project’s folder (by default in C:\Users\Public\Documents\Noldus\The Observer XT\Projects) and you do not see the project’s “Observer Project” (or .vop)

Related to The Observer XT

FaceReader will not install and the resulting Log file says Access Denied 0x80070005

This issue involves a situation where the installation of FaceReader on your PC fails and the resulting log file says “Error 0x80070005”

Related to FaceReader

The Observer will not install and the installation log file says Access Denied - 0x80070005

This issue involves a situation where the installation of The Observer XT on your PC fails and the resulting log file says “Error 0x80070005”

Related to The Observer XT

There are no rectangles around the paw prints in CatWalk XT

Too much of the animal is being detected, preventing CatWalk from focusing on the actual prints, or display of the rectangles has been turned off.

Related to CatWalk XT

Paw prints look incomplete in the Interactive Footprint Measurements screen in CatWalk XT

When the footprint is shown in the Interactive Footprint Measurements screen, it is enlarged by means of smoothing and anti-aliasing algorithms. Pixels that are outside the border of the footprint rectangle, which contain

Related to CatWalk XT