When I go to create a Spatial ETL Tool in ArcGIS Pro (version 2.3.3) I am prompted with the window to enter the name and label for my tool, but once I hit the 'OK' button the tool is not created. My cursor will turn to the spinning circle for a second or two, but when I check in under the tool box where I created the tool nothing is there, and no .fmw files are written to the folder the project is saved in. I have been able to successfully create Spatial ETL Tool's before in Pro but I do not remember what version (2.X) I was using at that time.
I can repro and we'll get on it, but in the meantime if you repeat the step to create the ETL tool but this (the second) time choose the existing .fmw file option you will find it is there and creating the tool will complete, i.e. a .fmw file is written and is accessible to the file picker.
This issue appears to be intermittent, i.e. session-dependent. While we look into it the above workflow will let you create an ETL tool, alternatively you can start Workbench from the Analysis ribbon, save a stub .fmw file to your home folder and create an ETL tool from an existing .fmw file.
Andrew, I have two questions.
I am also having this issue. Extension downloaded, license activated. I am following every suggestion on these forums but it is still not generating the generate workplace dialog box. I've uninstalled Data Interoperability and reinstalled. I'm just trying to convert a .LAZ file to .LAS.