<p>I took a wsp file, and did my <strong>stsadm -o addsolution</strong> like usual.  Then I went into <em>central administration->solution management</em> and it showed up just fine.  Then I deployed the web part, no problems so far.</p>

<p>The problem is when I go to add it to the webpart gallery (<em>Web Part Gallery: New Web Parts</em>) usually the web part is in the list, I check the box next to it and click <strong>populate gallery</strong> but it is not showing up in the list?  Could I be missing something in my manifest.xml to cause this?  I just wrote and deployed another web part this <em>exact</em> same way and it went fine.  Also, I wrote a dummy webpart that does nothing but print "working" and tried it with that getting the same results.  </p>

<p>Any ideas?</p>

I had sometime same behaviour. Finally we wrote a cmd-tool, which run "stsadm - o addsolution" and then add to web part gallery all xml files for web parts.
There is source ( little-bit edited ):
```
```
string cmd_StsAdm = @"C:\Program files\Common files\Microsoft Shared\web server extensions\12\BIN\stsadm.exe";
string url_Site = "http://localhost";
string url_Web = "http://localhost";
if ( string.IsNullOrEmpty( url_Web ) ) { url_Web = url_Web; }

Console.WriteLine( "Deleting sharepoint solution" );
string args_DeleteSolution = string.Format( "-o deletesolution -name \"{0}\" -override", startInfo.fileNameWsp );
ShellWait( cmd_StsAdm, args_DeleteSolution );

string filePathWsp = "**** path to wsp file ****";
Console.WriteLine( "Adding sharepoint solution" );
string args_AddSolution = string.Format( "-o addsolution -filename \"{0}\"", filePathWsp );
ShellWait( cmd_StsAdm, args_AddSolution );

Console.WriteLine( "Deploy sharepoint solution" );
string args_DeploySolution = "-o deploysolution -name \"{0}\" -local -allowGacDeployment -url \"{1}\" -force";
args_DeploySolution = string.Format( args_DeploySolution, startInfo.fileNameWsp, url_Web );
ShellWait( cmd_StsAdm, args_DeploySolution );

int counter = 0;
foreach ( CWebPartVytvoreniInfo wpRslt in solutionInfo.WebParts ) {
    counter++;
    string msg = string.Format( "Aktivace web part {0} - {1} z {2}", wpRslt.Info.Nazev, counter, solutionInfo.WebParts.Count );
    Console.WriteLine( msg );
    string args_ActivateFeature = "-o activatefeature -id {0} -url {1}";
    args_ActivateFeature = string.Format( args_ActivateFeature, wpRslt.Info.ID, url_Site );
    ShellWait( cmd_StsAdm, args_ActivateFeature );
}

Console.WriteLine( "Connecting to sharepoint site" );
using ( Microsoft.SharePoint.SPSite site = new Microsoft.SharePoint.SPSite( url_Site ) ) {
    Microsoft.SharePoint.SPList ctg_WebParts = site.GetCatalog( Microsoft.SharePoint.SPListTemplateType.WebPartCatalog );

    counter = 0;
    foreach ( WebPartInfo wpInfo in solutionInfo.WebParts ) {
        counter++;
        string dirPath = System.IO.Path.Combine( wpInfo.DirectoryPath );
        string fileName = wpRslt.Info.Nazev + ".webpart";
        string filePath = System.IO.Path.Combine( dirPath, fileName );

        string msg = string.Format( "Uploading file '{0}' - {1} z {2}", fileName, counter, solutionInfo.WebParts.Count );
        Console.WriteLine( msg );
        using ( System.IO.FileStream fstrm = OtevritSoubor( filePath ) ) {
            ctg_WebParts.RootFolder.Files.Add( fileName, fstrm, true );
        }
    }
}
```
```