I have just installed Ubuntu Mate 17.04 and everything seems to work fine.
But when I launch Software Boutique, the window stay open for fe seconds with the message ‘storing the boutique’ and then closes without any other message.
I have seen other post in the forum, but they refers to problems with 17.10 and I was not able to find a solution.
Any idea of the reason? Where should I look to find a hint/solution?
It would most likely had been a segmentation fault, which is where some code didn't play nice with some other code. In this case, this would most likely had been the WebKit2 library. There was a bug in the past that caused exactly what you described, which has since been fixed.
Bad installation medium could also be a possible cause of faulty installations. You can verify your downloads to be absolutely sure.
For applications, try running them through the terminal. Some also accept a -v (verbose) parameter, so you can see more inner workings of what it's doing.
ubuntu-mate-welcome --boutique -v
(In future, Software Boutique will become its own program, but it's part of Welcome for now.
For general system and kernel (usually hardware related) logs, check the Log File Viewer and check out syslog, dmesg and kern.log, etc.
Thanks for your suggstion. I will try to remember it, when and if I will need it.
Ubuntu has made a huge improvement for the typical Windows user, but when one needs to do something a little more in depth, Linux is still very hard to use and understand. One need to read a lot of documents that are hard to understand if you miss the basis of the system.