Failed to Instantiate Work Place Extension

I have this travel demand model input network which is organized as a geodatabase (*.gdb) other than .NET. I suppose there is some special setting with this gdb and therefore when I open it in ArcMap, it is read-only and when I tried to add it into ArcGIS pro, it couldn't be loaded with error message: Failed to Instantiate workplace extension COM component. [Citilabs Workspace Extension,....]. I also noticed that if the machine does not have CUBE installed, this gdb won't even open from ArcMap.

My questions are:

- Is it the Citilab Workspace Extension that makes this geodatabase read-only in ArcMap and it can't even be opened if CUBE is not installed? 

- I saw someone said in old Citilab community forum that Citilab was working on its compatibility with ArcGIS pro. Is that still going on or there has already a way to add the required Workspace Extension in ArcGIS pro. I think it will be really helpful if user can open the gdb processed by CUBE from ArcGIS pro

Thanks,  

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