Exception thrown on Upload

[sdzharkov]

When I upload a gif, I keep getting this error:

'Print-A-Gif.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_32\mscorlib\v4.0_4.0.0.0__b77a5c561934e089\mscorlib.dll'. Cannot find or open the PDB file.
'Print-A-Gif.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\Stepa\Documents\Print-A-Gif-master\Print-A-Gif\Print-A-Gif\bin\Release\Print-A-Gif.exe'. Symbols loaded.
'Print-A-Gif.exe' (CLR v4.0.30319: Print-A-Gif.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Windows.Forms\v4.0_4.0.0.0__b77a5c561934e089\System.Windows.Forms.dll'. Cannot find or open the PDB file.
'Print-A-Gif.exe' (CLR v4.0.30319: Print-A-Gif.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System\v4.0_4.0.0.0__b77a5c561934e089\System.dll'. Cannot find or open the PDB file.
'Print-A-Gif.exe' (CLR v4.0.30319: Print-A-Gif.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Drawing\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Drawing.dll'. Cannot find or open the PDB file.
'Print-A-Gif.exe' (CLR v4.0.30319: Print-A-Gif.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Configuration\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Configuration.dll'. Cannot find or open the PDB file.
'Print-A-Gif.exe' (CLR v4.0.30319: Print-A-Gif.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Core\v4.0_4.0.0.0__b77a5c561934e089\System.Core.dll'. Cannot find or open the PDB file.
'Print-A-Gif.exe' (CLR v4.0.30319: Print-A-Gif.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Xml\v4.0_4.0.0.0__b77a5c561934e089\System.Xml.dll'. Cannot find or open the PDB file.
Exception thrown: 'System.ArgumentOutOfRangeException' in System.Windows.Forms.dll
Value of '400' is not valid for 'Value'. 'Value' should be between 'Minimum' and 'Maximum'.

'Print-A-Gif.exe' (CLR v4.0.30319: Print-A-Gif.exe): Loaded 'C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\Common7\IDE\PrivateAssemblies\Runtime\Microsoft.VisualStudio.Debugger.Runtime.dll'. 

Any clue what might be going wrong? I also can't see any preview after I see that error message. After running it for a few minutes, I checked back on the files, and it basically created a bunch of png's that looked like this:

[sdzharkov]

Update: the gif I input was 2000px x 1000px. That is probably the issue here. I'll close it in the morning after I try with a better sized gif.