The Perl converter tries to build the name of a new converter from the Perl code that the converter uses.
Under some circumstances (too long?, has strange characters in the code?) the Converter crashes without displaying the dialog box for the new name.
A work-around is to create a new entry with some simple Perl code, e.g.,
$strOut=$strIn; It will ask you for the name:

and you can enter the name that reflects the proper function.
Once the converter has been created with a proper name, you can modify it with the code that would otherwise cause a crash.
Here is some sample Perl code that causes it to crash when it is used to create the new converter:
$strInOut = u2txt($strInOut);
sub u2txt{
my ($txtstring) = @_;
return $txtstring if $txtstring !~ m/U\+/;
my $vstring = "";
my @num = split (/U\+/, $txtstring);
for my $n (@num) {
next if !$n; #skip first null
$vstring = $vstring . chr(hex($n));
}
return $vstring;
}
Here is the crash dialog box followed by the text in the Details box.

See the end of this message for details on invoking
just-in-time (JIT) debugging instead of this dialog box.
************** Exception Text **************
System.ArgumentException: Illegal characters in path.
at System.IO.Path.CheckInvalidPathChars(String path, Boolean checkAdditional)
at System.IO.Path.GetFileName(String path)
at System.IO.Path.GetFileNameWithoutExtension(String path)
at SilEncConverters40.PerlExpressionAutoConfigDialog.get_DefaultFriendlyName()
at SilEncConverters40.AutoConfigDialog.buttonSaveInRepositoryEx()
at SilEncConverters40.AutoConfigDialog.buttonSaveInRepository_Click(Object sender, EventArgs e)
at System.Windows.Forms.Control.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ButtonBase.WndProc(Message& m)
at System.Windows.Forms.Button.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
************** Loaded Assemblies **************
mscorlib
Assembly Version: 4.0.0.0
Win32 Version: 4.8.9282.0 built by: NET481REL1LAST_C
CodeBase: file:///C:/Windows/Microsoft.NET/Framework/v4.0.30319/mscorlib.dll
----------------------------------------
ClipboardEC
Assembly Version: 4.0.0.0
Win32 Version: 4.0.1.1
CodeBase: file:///C:/Program%20Files%20(x86)/SIL/SILConverters/ClipboardEC.exe
----------------------------------------
System.Windows.Forms
Assembly Version: 4.0.0.0
Win32 Version: 4.8.9251.0 built by: NET481REL1LAST_C
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Windows.Forms/v4.0_4.0.0.0__b77a5c561934e089/System.Windows.Forms.dll
----------------------------------------
System
Assembly Version: 4.0.0.0
Win32 Version: 4.8.9282.0 built by: NET481REL1LAST_C
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System/v4.0_4.0.0.0__b77a5c561934e089/System.dll
----------------------------------------
System.Drawing
Assembly Version: 4.0.0.0
Win32 Version: 4.8.9032.0 built by: NET481REL1
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Drawing/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll
----------------------------------------
ECInterfaces
Assembly Version: 4.0.0.0
Win32 Version: 4.0.2.0
CodeBase: file:///C:/Program%20Files%20(x86)/SIL/SILConverters/ECInterfaces.DLL
----------------------------------------
System.Configuration
Assembly Version: 4.0.0.0
Win32 Version: 4.8.9032.0 built by: NET481REL1
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Configuration/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Configuration.dll
----------------------------------------
System.Core
Assembly Version: 4.0.0.0
Win32 Version: 4.8.9277.0 built by: NET481REL1LAST_B
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Core/v4.0_4.0.0.0__b77a5c561934e089/System.Core.dll
----------------------------------------
System.Xml
Assembly Version: 4.0.0.0
Win32 Version: 4.8.9032.0 built by: NET481REL1
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Xml/v4.0_4.0.0.0__b77a5c561934e089/System.Xml.dll
----------------------------------------
SilEncConverters40
Assembly Version: 4.0.0.0
Win32 Version: 4.0.2.0
CodeBase: file:///C:/Program%20Files%20(x86)/SIL/SILConverters/SilEncConverters40.DLL
----------------------------------------
System.Data
Assembly Version: 4.0.0.0
Win32 Version: 4.8.9214.0 built by: NET481REL1LAST_B
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_32/System.Data/v4.0_4.0.0.0__b77a5c561934e089/System.Data.dll
----------------------------------------
System.Numerics
Assembly Version: 4.0.0.0
Win32 Version: 4.8.9032.0 built by: NET481REL1
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Numerics/v4.0_4.0.0.0__b77a5c561934e089/System.Numerics.dll
----------------------------------------
AIGuesserEC
Assembly Version: 4.0.0.0
Win32 Version: 4.0.4.0
CodeBase: file:///C:/Program%20Files%20(x86)/SIL/SILConverters/AIGuesserEC.DLL
----------------------------------------
CcEC
Assembly Version: 4.0.0.0
Win32 Version: 4.0.1.0
CodeBase: file:///C:/Program%20Files%20(x86)/SIL/SILConverters/CcEC.DLL
----------------------------------------
IcuEC
Assembly Version: 4.0.0.0
Win32 Version: 4.0.0.2
CodeBase: file:///C:/Program%20Files%20(x86)/SIL/SILConverters/IcuEC.DLL
----------------------------------------
PerlExpressionEC
Assembly Version: 4.0.0.0
Win32 Version: 4.0.0.0
CodeBase: file:///C:/Program%20Files%20(x86)/SIL/SILConverters/PerlExpressionEC.DLL
----------------------------------------
Microsoft.GeneratedCode
Assembly Version: 1.0.0.0
Win32 Version: 4.8.9032.0 built by: NET481REL1
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Xml/v4.0_4.0.0.0__b77a5c561934e089/System.Xml.dll
----------------------------------------
************** JIT Debugging **************
To enable just-in-time (JIT) debugging, the .config file for this
application or computer (machine.config) must have the
jitDebugging value set in the system.windows.forms section.
The application must also be compiled with debugging
enabled.
For example:
<configuration>
<system.windows.forms jitDebugging="true" />
</configuration>
When JIT debugging is enabled, any unhandled exception
will be sent to the JIT debugger registered on the computer
rather than be handled by this dialog box.
The Perl converter tries to build the name of a new converter from the Perl code that the converter uses.
Under some circumstances (too long?, has strange characters in the code?) the Converter crashes without displaying the dialog box for the new name.
A work-around is to create a new entry with some simple Perl code, e.g.,

$strOut=$strIn;It will ask you for the name:and you can enter the name that reflects the proper function.
Once the converter has been created with a proper name, you can modify it with the code that would otherwise cause a crash.
Here is some sample Perl code that causes it to crash when it is used to create the new converter:
Here is the crash dialog box followed by the text in the Details box.