IMac won't connect to MBP on home network

I have an iMac and a MacBook Pro at home on the same network. The iMac is connected by ethernet, the MBP by wireless. The MBP can see the iMac under the shared list in Finder. I can select and browse folders. The issue is on the iMac. I can see the MBP but when I try and connect it just hangs. Occasionally I do connect but all the folder I try and browse have a red circles and won't let me access.
I have tried deleting the com.apple.finder.plist file and logging out/logging in on both machines. This did not fix the problem. Any help is appreciated.
Paul

I came on here to post the same - or similar issue.
My iMac G5 sees but fails to connect via airport and home network to my Macbook. Macbook connects to iMac no problem.
I tried connecting them directly via ethernet, same result. iMac sees but fails to connect to Macbook; Macbook connects to iMac.
This has happened before and has worked itself out (although I don't know how).
Yesterday, I did an Onyx clean up and maintenance.

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configd plug-in: 6.2.3 (623.1)
System Profiler: 6.0 (600.9)
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en1:
Card Type: AirPort Extreme (0x14E4, 0x87)
Firmware Version: Broadcom BCM43xx 1.0 (5.10.91.27)
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dehouseofting_N:
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IMac won't connect to MBP on home network

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