Cannot get simulator running

I upgraded Xojo so that I could compile with new Xcode.
So Xcode is upgraded (version 15.3)
Xojo tells me there is no simulator it can use

Xcode tells me that I need to download iOS 17.4, and had a Get button.
I did that, 7Gb of simulator downloaded, but it still isnt happy.

If I click the button next to iOS 17.4, it just shows me the downloaded simulator, but doesnt start any new download.

What am I missing?

In Xcode preferences, make sure the version of tools in use is correct.

When i can.
Redownloaded Xcode, it wants yet another new 7Gb Simulator, that downloads, and then

:frowning:

It’s currently downloading again.

When I’ve had this, I’ve found deleting the older iOS Simulator and downloading it from scratch has solved it. I see in your screenshot you have one installed below the Get button so you could try deleting that one that is already installed before downloading it again.