Steps to reproduce this issue

1. Start HeidiSQL
2. In the connection manager, select a folder with a Database connection in it;
3. Rename folder
4. Append a backslash and some characters (e.g. "Foldername\Test")
5. Then HeidiSQL hangs and will crash at every restart. (Stack Overflow exception)

Current behavior

1. HeidiSQL won't start anymore. (Stack Overflow exception)

Expected behavior

1. HeidiSQL to start
2. To get a renamed folder with a backslash in it's name

Possible solution

Open the Windows Registry at HKEY_CURRENT_USER\Software\HeidiSQL\Servers.
You will see, that HeidiSQL created the "Server" keys recursively.
Delete all keys, except the first one in the tree. Now HeidiSQL starts as expected.

Environment

• HeidiSQL version: 10.2.0.5599
• Operating system: Windows 10 1903