Hello! I'm sorry to hear you're having trouble with ibis Paint X crashing when trying to import brushes. Let's see if we can get this resolved together!

### Step 1: Restart the Application
First, have you tried restarting the app or your computer? Sometimes, a simple restart can help to refresh everything.

### Step 2: Clear Cache
If restarting doesn't help, let's try clearing the app's cache. Here’s how you can do that on Windows 10:

1. Open the Start Menu and go to Settings.
2. Select Apps and find ibis Paint X in the list.
3. Click on it and look for Storage.
4. Here, you should find an option to Clear Cache. Click on that.

### Step 3: Update the App
Make sure you have the latest version of the app installed, as updates often fix bugs. You can check for updates in the Microsoft Store.

1. Open the Microsoft Store.
2. Go to the Library section.
3. Click on Get updates to see if there are any updates available for ibis Paint X.

### Step 4: Reinstall the App
If the problem persists after these steps, a reinstallation might help:

1. Uninstall ibis Paint X from your computer.
2. Restart your computer.
3. Go to the Microsoft Store and install ibis Paint X again.

Please give these steps a try and let me know how it goes. If the app still closes immediately after trying to open it, we can explore further solutions or check for any server issues. Are you satisfied with the steps provided so far?