If you deployed .NET projects from earlier releases of PowerBuilder, you must make sure to complete the following steps before redeploying the same projects from PowerBuilder 11.5:
For .NET Web Forms and .NET Web Service targets, you must install AJAX extensions on development computers and production servers
You can download and install the Microsoft ASP.NET AJAX Extensions version 1.0 from the ASP.NET Web site.
For .NET Web Forms and .NET Windows Forms projects, select “Full” for the project rebuild type before you redploy your applications from PowerBuilder 11.5 for the first time
For .NET Web Forms and .NET Web Service targets, clear ASP.NET temporary files for the application or component on development computers and production servers. The temporary files are located in the C:\WINDOWS\Microsoft.NET\Framework\version\Temporary ASP.NET Files\projectName directory, where version is typically v2.0.50727, and projectName is the project’s Web application name or its Web service virtual directory name
For all .NET targets, uninstall earlier versions of PowerBuilder runtime files (system assemblies and win32 DLLs) on all deployment computers or servers, then install the PowerBuilder 11.5 runtime files using the Runtime Packager or another tool, as described in the “Checklist for deployment” section of the Deploying Applications and Components to .NET book