Hi. I am facing the same problem.
I downloaded the Repetier-Host-x86_64-2.1.6.AppImage file, changed it to executable and I am able to run it. I configured the connection (IP) of my printer and as soon as I click connect, Repetier host hangs.
I tried to run it from a terminal and here it is what I have after click connect button
dell@dell-inspiron1525:~/Repetier$ ./Repetier-Host-x86_64-2.1.6.AppImage
LD_LIBRARY_PATH = /tmp/.mount_Repetiz5ewtC/usr/lib:/tmp/.mount_Repetiz5ewtC/usr/lib/mono/4.5:
MONO_PATH = /tmp/.mount_Repetiz5ewtC/usr/lib/mono/4.5
Unhandled Exception:
System.TypeInitializationException: The type initializer for 'System.Console' threw an exception. ---> System.TypeInitializationException: The type initializer for 'System.ConsoleDriver' threw an exception. ---> System.Exception: Magic number is wrong: 542
at System.TermInfoReader.ReadHeader (System.Byte[] buffer, System.Int32& position) [0x00028] in <a07d6bf484a54da2861691df910339b1>:0
at System.TermInfoReader..ctor (System.String term, System.String filename) [0x0005f] in <a07d6bf484a54da2861691df910339b1>:0
at System.TermInfoDriver..ctor (System.String term) [0x00055] in <a07d6bf484a54da2861691df910339b1>:0
at System.ConsoleDriver.CreateTermInfoDriver (System.String term) [0x00000] in <a07d6bf484a54da2861691df910339b1>:0
at System.ConsoleDriver..cctor () [0x0004d] in <a07d6bf484a54da2861691df910339b1>:0
--- End of inner exception stack trace ---
at System.Console.SetupStreams (System.Text.Encoding inputEncoding, System.Text.Encoding outputEncoding) [0x00007] in <a07d6bf484a54da2861691df910339b1>:0
at System.Console..cctor () [0x0008e] in <a07d6bf484a54da2861691df910339b1>:0
--- End of inner exception stack trace ---
at RepetierHost.connector.SocketConnector.WriteLoop () [0x00030] in <374e76794d164d76af696b6b7ca9e871>:0
at System.Threading.ThreadHelper.ThreadStart_Context (System.Object state) [0x00014] in <a07d6bf484a54da2861691df910339b1>:0
at System.Threading.ExecutionContext.RunInternal (System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, System.Object state, System.Boolean preserveSyncCtx) [0x00071] in <a07d6bf484a54da2861691df910339b1>:0
at System.Threading.ExecutionContext.Run (System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, System.Object state, System.Boolean preserveSyncCtx) [0x00000] in <a07d6bf484a54da2861691df910339b1>:0
at System.Threading.ExecutionContext.Run (System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, System.Object state) [0x0002b] in <a07d6bf484a54da2861691df910339b1>:0
at System.Threading.ThreadHelper.ThreadStart () [0x00008] in <a07d6bf484a54da2861691df910339b1>:0
[ERROR] FATAL UNHANDLED EXCEPTION: System.TypeInitializationException: The type initializer for 'System.Console' threw an exception. ---> System.TypeInitializationException: The type initializer for 'System.ConsoleDriver' threw an exception. ---> System.Exception: Magic number is wrong: 542
at System.TermInfoReader.ReadHeader (System.Byte[] buffer, System.Int32& position) [0x00028] in <a07d6bf484a54da2861691df910339b1>:0
at System.TermInfoReader..ctor (System.String term, System.String filename) [0x0005f] in <a07d6bf484a54da2861691df910339b1>:0
at System.TermInfoDriver..ctor (System.String term) [0x00055] in <a07d6bf484a54da2861691df910339b1>:0
at System.ConsoleDriver.CreateTermInfoDriver (System.String term) [0x00000] in <a07d6bf484a54da2861691df910339b1>:0
at System.ConsoleDriver..cctor () [0x0004d] in <a07d6bf484a54da2861691df910339b1>:0
--- End of inner exception stack trace ---
at System.Console.SetupStreams (System.Text.Encoding inputEncoding, System.Text.Encoding outputEncoding) [0x00007] in <a07d6bf484a54da2861691df910339b1>:0
at System.Console..cctor () [0x0008e] in <a07d6bf484a54da2861691df910339b1>:0
--- End of inner exception stack trace ---
at RepetierHost.connector.SocketConnector.WriteLoop () [0x00030] in <374e76794d164d76af696b6b7ca9e871>:0
at System.Threading.ThreadHelper.ThreadStart_Context (System.Object state) [0x00014] in <a07d6bf484a54da2861691df910339b1>:0
at System.Threading.ExecutionContext.RunInternal (System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, System.Object state, System.Boolean preserveSyncCtx) [0x00071] in <a07d6bf484a54da2861691df910339b1>:0
at System.Threading.ExecutionContext.Run (System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, System.Object state, System.Boolean preserveSyncCtx) [0x00000] in <a07d6bf484a54da2861691df910339b1>:0
at System.Threading.ExecutionContext.Run (System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, System.Object state) [0x0002b] in <a07d6bf484a54da2861691df910339b1>:0
at System.Threading.ThreadHelper.ThreadStart () [0x00008] in <a07d6bf484a54da2861691df910339b1>:0
dell@dell-inspiron1525:~/Repetier$