Title

Following KeePassNatMsg's installation procedure: KeePass crashes when clicking "Tools -> KeePassNatMsg Options"

Context

On Ubuntu 19.10, KeePass is installed from the package manager. KeePassNatMsg is downloaded and installed manually. Crash happens when accessing --- from KeePass --- the menu "Tools -> KeePassNatMsg Options".

Observed behaviour

A black window opens for a few seconds; KeePass crashes.

Expected behaviour

A window opens providing a "Install/Update Native Messaging Host" button.

Steps to reproduce

On Ubuntu 19.10, open a terminal:
0. Install KeePass: sudo apt install -y keepass2
Follows KeePassNatMsg installation instructions:

1. Download the latest KeePassNatMsg release
2. Unzip it to /usr/lib/keepass2/Plugins/
3. Install mono sudo apt install -y mono-complete
4. Restart KeePass
5. Go to Tools -> KeePassNatMsg Options

Crash.

Details & Versions

• OS version: Ubuntu 19.10 (cat /etc/os-release)
• Mono version: 5.18.0.240 (mono --version)
• KeePass version: KeePass 2.41 (keepass2 --version)
• KeePassNatMsg version: 2.0.9 (KeePassNatMsg-v2.0.9-binaries.zip)
• KeePassNatMsg files' rights:

yscialom@Kloe:/usr/lib/keepass2/Plugins$ ll
drwxr-xr-x 2 root root 4,0K févr. 21 22:34 KeePassNatMsg/
yscialom@Kloe:/usr/lib/keepass2/Plugins$ ll KeePassNatMsg/
-rwxr-xr-x 1 root root 105K févr. 21 22:34 KeePassNatMsg.dll
-rwxr-xr-x 1 root root  78K déc.  21  2017 Mono.Posix.dll
-rwxr-xr-x 1 root root 514K déc.  21  2017 Newtonsoft.Json.dll