Visual Studio 2010 and ODP.NET error - visual-studio-2010

Question

Can someone please guide me to fix this problem while accessing "Server Explorer" ? I've tried reinstalling VS 2010 but no luck.
Version of ODP.NET and VS2010,
Activity Log,
OracleVSGPkg.Close - Exception when terminating Oracle Developer Tools SQL*Plus Service Oracle.VsDevTools Unable to load DLL 'oravs11w.dll': The specified module could not be found. (Exception from HRESULT: 0x8007007E) at Oracle.VsDevTools.OracleSVCSqlplus.Terminate() at Oracle.VsDevTools.OracleVSGPkg.Microsoft.VisualStudio.Shell.Interop.IVsPackage.Close() {D601BB95-E404-4A8E-9F24-5C1A462426CE}
Another re-installation, here is the log,
317 OracleVSGPkg.Close - Revoking Oracle Developer Tools Oracle Input Output Service {D601BB95-E404-4A8E-9F24-5C1A462426CE} Oracle Developer Tools for Visual Studio 2011/04/27 07:04:14.549
318 OracleVSGPkg.Close - Revoking Oracle Developer Tools Oracle Database Project Service {D601BB95-E404-4A8E-9F24-5C1A462426CE} Oracle Developer Tools for Visual Studio 2011/04/27 07:04:14.550
319 OracleVSGPkg.Close - Revoking Oracle Developer Tools Oracle Message Box Service {D601BB95-E404-4A8E-9F24-5C1A462426CE} Oracle Developer Tools for Visual Studio 2011/04/27 07:04:14.551
320 OracleVSGPkg.Close - Revoking Oracle Developer Tools Common Language Runtime Service {D601BB95-E404-4A8E-9F24-5C1A462426CE} Oracle Developer Tools for Visual Studio 2011/04/27 07:04:14.552
321 OracleVSGPkg.Close - Revoking Oracle Developer Tools PL/SQL Language Service {D601BB95-E404-4A8E-9F24-5C1A462426CE} Oracle Developer Tools for Visual Studio 2011/04/27 07:04:14.553
322 OracleVSGPkg.Close - Revoking Oracle Developer Tools SQL Language Service {D601BB95-E404-4A8E-9F24-5C1A462426CE} Oracle Developer Tools for Visual Studio 2011/04/27 07:04:14.554
323 OracleVSGPkg.Close - Revoking Oracle Developer Tools Package Service {D601BB95-E404-4A8E-9F24-5C1A462426CE} Oracle Developer Tools for Visual Studio 2011/04/27 07:04:14.555
324 OracleVSGPkg.Close - Remove the Oracle Developer Tools as an IOleCommand Target {D601BB95-E404-4A8E-9F24-5C1A462426CE} Oracle Developer Tools for Visual Studio 2011/04/27 07:04:14.556
325 OracleVSGPkg.Close - Cleanup the Oracle Developer Tools Global resources {D601BB95-E404-4A8E-9F24-5C1A462426CE} Oracle Developer Tools for Visual Studio 2011/04/27 07:04:14.557
326 OracleVSGPkg.Close - End Oracle Developer Tools VS Package Close {D601BB95-E404-4A8E-9F24-5C1A462426CE} Oracle Developer Tools for Visual Studio 2011/04/27 07:04:14.558
327 ERROR End package load [Oracle Developer Tools for Visual Studio .NET] {D601BB95-E404-4A8E-9F24-5C1A462426CE} 80004005 - E_FAIL VisualStudio 2011/04/27 07:04:14.559

Answer 1

I realise this is an old post but I have just come across this exact problem when uninstalling the Oracle.ManagedDataAccess.Client beta.
If you follow the instructions shown in your screen shot, i.e.
Make sure have have ran the Oracle Universal Uninstaller (OUI).
Open a devenv instance with
devenv /log
Once the instance has loaded close it down and go to.
C:\Users\{yourUser}\AppData\Roaming\Microsoft\VisualStudio\11.0\
And look for the ActivityLog.xml file closest to your current time. And Open it.
C:\Users\c20082\AppData\Roaming\Microsoft\VisualStudio\11.0
Look for an entry similar to the following
<entry>
<record>288</record>
<time>2013/07/18 07:56:02.183</time>
<type>Information</type>
<source>VisualStudio</source>
<description>Begin package load [Oracle Developer Tools for Visual Studio] </description>
<guid>{D601BB95-E404-4A8E-9F24-5C1A462426CE}</guid>
</entry>
Search your registry for this key and delete any entries referencing it.
Reinstall Oracle Developer Tools, and you should be good to go.

Answer 2

I have faced this issue many times. Actually reinstall ODT package is an alternative but very annoying. Hence I solved in this way, just reregistering the dlls in question.
Open Visual Studio 2010 command prompt as administrator.
Execute devenv.exe /log. Open the log to certify wich version is used. In my case, for instance, is Oracle.VsDevTools.10.0.
At the same prompt opened priorly, execute these two lines:
gacutil /i {oracle home where you installed ODAC 11.2.0.2.1}\odt\vs2010\Oracle.VsDevTools.dll
gacutil /i {oracle home where you installed ODAC 11.2.0.2.1}\odt\vs2010\Oracle.Management.Omo.dll
Open your Visual Studio 2010 and go to Help -> About Microsoft Visual Studio. As you can see, the package was loaded successfully.