Hi Tobias,

The 'configure' button should be enabled in client test tool when the app package was correctly installed, has a config script, and at least one configuration entry in the AppInfo.xml. Can you double-check the following things?

• The 'Configuration' tag in the AppInfo should contain at least one entry. I have verified the AppInfo.xml at the bottom of this answer works on DM10.2.12, and should work on earlier DM versions as well. The important bit is everything between the 'Configuration' tag.
• Make sure the install status of the DMApp is marked as 'Installed' in the installed packages tab of the App Packages window in client test tool.
• Make sure the Config.xml file is contained in the .dmapp. If you unzip the .dmapp it should be in the Scripts folder, and should have the name 'Config.xml'
• If all this looks ok, it might be a good idea to check the the installed app info. See below for some example code you can use in an automation script. The 'Configuration' of the installed app should not be null, and there should at least be one configuration entry:

The script to check the installed apps:

using Skyline.DataMiner.Automation;
using Skyline.DataMiner.Net.AppPackages;

namespace CheckInstalledApps
{
public class Script
{
public void Run(Engine engine)
{
var helper = new AppPackageHelper(engine.SendSLNetMessage);
var installedApps = helper.GetInstalledApps();

engine.GenerateInformation($"Got {installedApps.Count} installed apps");
foreach (var installedAppInfo in installedApps)
{
if (installedAppInfo.AppInfo?.Configuration == null)
{
engine.GenerateInformation($"App {installedAppInfo.AppInfo.Name} ({installedAppInfo.AppInfo.Version}): no configuration defined");
continue;
}
else
{
engine.GenerateInformation($"App{installedAppInfo.AppInfo.Name} ({installedAppInfo.AppInfo.Version}): {installedAppInfo.AppInfo?.Configuration?.Entries?.Count} entries in the configuration");
}
}
}
}
}

The example AppInfo.xml:

<AppInfo>
<Name>RT_APP_PACKAGES_Configuration</Name>
<DisplayName>This is an example package</DisplayName>
<Version>1.0.0</Version>
<Description>This is an example package for RT purposes</Description>
<LastModifiedAt>2020-05-07T09:15:05</LastModifiedAt>
<MinDmaVersion>10.0.7</MinDmaVersion>
<AllowMultipleInstalledVersions>true</AllowMultipleInstalledVersions>
<Configuration>
<Entries>
<Entry>
<ID>ExampleEntry</ID>
<Name>Example Name</Name>
</Entry>
</Entries>
</Configuration>
</AppInfo>