# PATH NULL ERROR
**URL:** https://forum.alternetsoft.com/t/path-null-error/207
**Category:** AlterNET Studio Support
**Tags:** installation
**Created:** [May 17, 2017, 12:00am UTC](https://forum.alternetsoft.com/t/path-null-error/207 "2017-05-17T00:00:00Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@rhoward](https://forum.alternetsoft.com/u/rhoward)
#### Post date: [May 17, 2017, 12:00am UTC](https://forum.alternetsoft.com/t/path-null-error/207/1 "2017-05-17T00:00:00Z")
After installing my app on a clients machine, I am getting
"Value cannot be null. Parameter name: path" errors when I try and compile. It shows up in the Error List tab even for empty scripts. It may be a permissions issue but I don't know where to start looking. Can you give me any guidance?
Rich
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### Author:  [@andrew.medvedev](https://forum.alternetsoft.com/u/andrew.medvedev)
#### Post date: [May 17, 2017, 12:00am UTC](https://forum.alternetsoft.com/t/path-null-error/207/2 "2017-05-17T00:00:00Z")
Hi Rich,
Would it be possible to send me (andrew.medvedev@alternetsoft.com) screenshot of the exception and the your app itself so I can try reproducing it on my end?
Regards,
Andrew
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### Author:  [@andrew.medvedev](https://forum.alternetsoft.com/u/andrew.medvedev)
#### Post date: [May 21, 2017, 12:00am UTC](https://forum.alternetsoft.com/t/path-null-error/207/3 "2017-05-21T00:00:00Z")
Hi Rich,
problem should be fixed, please try this new installation and let me know whether it is works as expected:
[http://www.alternetsoft.com/download/Alternet.ExtensibilityStudio.Setup\_1.1.msi](http://www.alternetsoft.com/download/Alternet.ExtensibilityStudio.Setup_1.1.msi)
regards,
Andrew
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### Author:  [@rhoward](https://forum.alternetsoft.com/u/rhoward)
#### Post date: [May 24, 2017, 12:00am UTC](https://forum.alternetsoft.com/t/path-null-error/207/4 "2017-05-24T00:00:00Z")
Downloaded new version. But it seems RichScriptEdit and RichDebugEdit (which I use) are referencing older 1.0 assemblies as well as newer 1.1 assemblies.
Are RichScriptEdit and RichDebugEdit part of the runtime install or are they only in the Demo install? Are they "official" classes of Extensibility Studio?
In any case, I think they need to be updated to 1.1 completely or I cant compile.
Rich
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### Author:  [@andrew.medvedev](https://forum.alternetsoft.com/u/andrew.medvedev)
#### Post date: [May 24, 2017, 12:00am UTC](https://forum.alternetsoft.com/t/path-null-error/207/5 "2017-05-24T00:00:00Z")
Hi Rich,
All demo project should reference Alternet dlls from bin folder which is installed next to demo folder using relative path, so they should be of version 1.1.
Here is for example how RichScriptEdit references Alternet.Common.dll:
Alternet.Common.RichScriptEdit.csproj
False
..\..\..\Bin\Alternet.Common.dll
I'm uploading full demo folder, please let me know if you can compile solution AlterNET.Scripter.AllDemos.sln:
[http://www.alternetsoft.com/download/Extensibility](http://www.alternetsoft.com/download/Extensibility) Studio 1.1.7z
Regards,
Andrew
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### Author:  [@rhoward](https://forum.alternetsoft.com/u/rhoward)
#### Post date: [May 25, 2017, 12:00am UTC](https://forum.alternetsoft.com/t/path-null-error/207/6 "2017-05-25T00:00:00Z")
Yes, Version 1.1 fixed the path error thanks!
I am using version 1.0 of RichScriptEdit and RichDebugEdit at the moment and they are also working. But I will download new Demos and see if the version changed to 1.1.
Rich