Crash on start under Ubuntu 16.04

[dertroglodyt]

CKAN Version:
1.18.1
mono 4.2.1
certs are synced

Operating System:
ubuntu 16.04

The issue you are experiencing:
mono ./ckan.exe crashes on start.
Same for new empty diectory as for old directory with 100+ mods installed.

How to recreate this issue:
see above. launching it as "mono ckan" or "ckan" does crash every time.

CKAN error codes (if applicable):
Unhandled Exception:
System.TypeInitializationException: The type initializer for 'CKAN.CmdLine.MainClass' threw an exception. ---> System.IO.FileNotFoundException: Could not load file or assembly 'System.Core, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' or one of its dependencies.
File name: 'System.Core, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'
at log4net.Repository.Hierarchy.DefaultLoggerFactory+LoggerImpl..ctor (System.String name) <0x40298000 + 0x00013> in :0

[ayan4m1]

Could not load file or assembly 'System.Core

Do you have the libmoono-system-core4.0-cil package installed?

[dertroglodyt]

How would I know? I just freshly installed mono...
apt-get says there is no such package.
Just ignore that. Too late already. Installing package now...

[dertroglodyt]

OK, now it says:
Unhandled Exception:
System.TypeInitializationException: The type initializer for 'CKAN.Net' threw an exception. ---> System.IO.FileNotFoundException: Could not load file or assembly 'System.Transactions, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' or one of its dependencies.
File name: 'System.Transactions, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'
--- End of inner exception stack trace ---
[ERROR] FATAL UNHANDLED EXCEPTION: System.TypeInitializationException: The type initializer for 'CKAN.Net' threw an exception. ---> System.IO.FileNotFoundException: Could not load file or assembly 'System.Transactions, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' or one of its dependencies.
File name: 'System.Transactions, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'
--- End of inner exception stack trace ---

[dertroglodyt]

OK, installed transaction too.
Now I get:
Could not load file or assembly 'System.Windows.Forms

How deep do I have to follow this?

[dertroglodyt]

No idea where to go now.
Now it's:

mono ./ckan.exe
701 [1] ERROR CKAN.ErrorDialog (null) - Error in autoupdate:
Could not load file or assembly 'Microsoft.CSharp, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies.
12477 [1] ERROR CKAN.Main (null) - Error in autoupdate
System.IO.FileNotFoundException: Could not load file or assembly 'Microsoft.CSharp, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies.
File name: 'Microsoft.CSharp, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'
at CKAN.Main.OnLoad (System.EventArgs e) <0x40431090 + 0x001bf> in :0
13197 [1] WARN CKAN.GameVersionProviders.KspBuildMap (null) - Could not parse build map
13197 [1] WARN CKAN.GameVersionProviders.KspBuildMap (null) - Could not parse build map
System.NullReferenceException: Object reference not set to an instance of an object
at CKAN.GameVersionProviders.KspBuildMap.get_Item (System.String buildId) <0x40498630 + 0x0002b> in :0
at CKAN.GameVersionProviders.KspBuildIdVersionProvider.TryGetVersion (System.String directory, CKAN.Versioning.KspVersion& result) <0x40498070 + 0x001c2> in :0
at CKAN.KSP.DetectVersionInternal (System.String directory) <0x4046d760 + 0x00071> in :0
at CKAN.KSP.DetectVersion (System.String directory) <0x4046d650 + 0x00017> in :0
at CKAN.KSP.Version () <0x4046cf50 + 0x0003f> in :0
at CKAN.Main.m__B () <0x4046cdb0 + 0x00043> in :0
at CKAN.Util.Invoke[T](CKAN.T obj, System.Action action) <0x402f6520 + 0x000cb> in :0
at CKAN.Main.CurrentInstanceUpdated () <0x4046cbf0 + 0x0009b> in :0
at CKAN.Main.OnLoad (System.EventArgs e) <0x40431090 + 0x00bfb> in :0
at System.Windows.Forms.Form.OnLoadInternal (System.EventArgs e) <0x40430e30 + 0x0007f> in :0

[politas]

Are you trying to build CKAN from source?

[dertroglodyt]

No. Just put the ckan.exe into an empty folder.
Btw: Fresh install of Ubuntu 16.04 too.

[politas]

And you got that from the current release?

[dertroglodyt]

Latest Releas "StarTrammier"

[politas]

I've just upgraded to Ubuntu 16.04, but I have Mono 4.4.2 from the mono-project.org PPA, and it's working fine for me.

[politas]

And you've done apt install libcurl4-openssl-dev?

[dertroglodyt]

Yes, did that
Why is my mono 4.2.1 when I just did apt-get it?

[politas]

That's what's Ubuntu's providing. To get 4.4.2, you have to go upstream to the mono-project ppa.

[politas]

But 4.2.1 ought to work, unless Ubuntu have b0rked it.

[DinCahill]

There's the mono-complete package which might help. I'm not at a computer right now I can't check.

[politas]

Oh, yes, definitely need mono-complete, whether from the Ubuntu Repos or the Mono-project PPA

[dertroglodyt]

Installing...

[dertroglodyt]

...aaaaaand: Works like a charm!
Thank you so much for your help!
I wouldn't know how to play KSP without CKAN.

[politas]

Was that installing mono-complete, or switching to the mono-project PPA that fixed it?

[dertroglodyt]

Yes, last step with mono-complete soved it.