Problem with Query validation in Dataflows

[LABORSAL]

I began experiencing an issue with dataflows where I am no longer able to save queries, I get the validating message for more than 3 hours and it doesn't crash or advance. Previously it was taking about 3 minutes.

I already tried running a similar query in the desktop app and it runs really fast so I don't think it's the complexity of the query (also it was working fine last week)

Has anyone encountered this issue before?

[jopires0]

Same problem here. When saving the Dataflow, it takes a very long time to Validate Queries. Sometimes it aborts with unexpected error. Sometimes it runs for hours and never finishes saving the modification aplied.