I have tried this and it still opens in 32bit
When you go to the Edit In submenu under the Photo menu, the Edit in Adobe Photoshop [Version] command is dimmed.
Also, the Edit in Adobe Photoshop [Version] command is missing from the context menu when you click an image. In the External Editor tab of the Preferences, the upper box is labeled "Edit in Photoshop (Not Found)." If you have Adobe Photoshop Elements installed, the Edit in Adobe Photoshop command is listed as Edit in Adobe Photoshop Elements.
Use the Check for Updates command under the Help menu to download and install the latest version of Lightroom.
Solution 1: Uninstall and reinstall Photoshop.
This step re-creates any files or folders that have been damaged since Photoshop or Photoshop Elements was installed.
Solution 2: Re-create the Photoshop.exe application path registry key.
Disclaimer: This procedure involves editing the Windows registry. Adobe doesn't provide support for editing the registry, which contains critical system and application information. Make sure to back up the registry before editing it. For more information about the registry, see the Windows documentation or contact Microsoft.
- Exit Photoshop and Lightroom.
- Choose Start > Run. If you do not have Run listed, see What happened to the Run command?
- Type "regedit" (without quotes) in the Open box, and then click OK to start the Windows Registry Editor.
- Navigate to the following registry key: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\.
- Right-click the App Paths folder and choose New > Key.
- Type "Photoshop.exe" (without quotes) as the name of the new key, then press Enter.
- Right-click the Photoshop.exe folder and choose New > String Value.
- Type "Path" (without quotes) as the name of the new value, then press Enter.
- In the right pane of the registry, right-click the (Default) value and choose Modify.
- In the Value Data field, enter the location of the Photoshop.exe file on your computer. Include Photoshop.exe at the end of the path. For example, if you installed Photoshop CS5 to the default location, enter C:\Program Files\Adobe\Adobe Photoshop CS5\Photoshop.exe. If you have a different version of Photoshop or have installed to a different directory, change the path as appropriate.
- Click OK.
- In the right pane of the registry, right-click the Path value and choose Modify.
- In the Value Data field, enter the file path for where the Photoshop.exe file is on your computer. (This path is the same as you entered in step 10, except omit Photoshop.exe from the end.) For example, if you installed Adobe Photoshop CS5 to the default location, enter C:\Program Files\Adobe\Adobe Photoshop CS5\. If you have a different version of Photoshop or have installed to a different directory, change the path as appropriate.
- Click OK.
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- Exit the registry.(Default) C:\Program Files\Adobe\Adobe Photoshop CC 2014\Photoshop.exePath C:\Program Files\Adobe\Adobe Photoshop CC 2014\but it still opens the 32bit version
