Hi Edwin,
No, the current VM is fine. It's hard to see the error message you've got there because it's truncated by the screen, however, when I just tried repeating your attempted install of Maui v1.53 on SqueakMap in Squeak 5.3, I ran into extreme slowness of
squeaksource.com. This is confirmed if you try to access the
squeaksource.com website. For some reason, the server is really really slow right now.
Because of that, I encountered several errors as shown in the attached .png picture -- which looks different than the error you got -- nevertheless, I was able to click "Yes" for a debugger, then select the "allFilenames" method, then click the "Restart" button, then "Proceed". Restart just restarts that last method that failed (allFilenames) and not the entire process.
By doing that, Maui loaded cleanly. So the problem is just that the SqueakSource server needs to be bounced and possibly a bug fixed. I've reached out to the administrator of that server who I believe has now fixed it. I'm now able to load Maui cleanly with one click and no debugger interruptions. That may have just been some unfortunate timing, it should work for you too now.
Regards,
Chris