WIFI turns off after wake

Ever since I upgraded to Yosemite in my iMac my WIFI turns off each time it wakes from sleep (it doesn't happen on my MBPro).  I have tried every solution I could find and nothing seems to work (new user, safe boot, turning off AWDL, removing plist files, etc.).  Here is the system log from last time WIFI turned off:
1/31/15 2:00:40.000 PM kernel[0]: AirPort: Link Down on en1. Reason 8 (Disassociated because station leaving).
1/31/15 2:00:40.000 PM kernel[0]: en1::IO80211Interface::postMessage bssid changed
1/31/15 2:00:40.215 PM airportd[33]: _handleLinkEvent: Got an error trying to query WiFi for power. Resetting state variables.
1/31/15 2:00:40.221 PM sharingd[257]: 14:00:40.220 : Discoverable mode changed to Off
1/31/15 2:00:40.221 PM sharingd[257]: 14:00:40.220 : BTLE scanning stopped
1/31/15 2:00:40.222 PM sharingd[257]: 14:00:40.221 : SDStatusMonitor::kStatusWirelessPowerChanged
1/31/15 2:00:40.401 PM UserEventAgent[19]: Captive: CNPluginHandler en1: Inactive
1/31/15 2:00:40.402 PM discoveryd[55]: Basic Bonjour stop listening on en1
1/31/15 2:00:40.403 PM configd[29]: network changed: v4(en0:192.168.1.3, en1-:192.168.1.18) DNS* Proxy SMB
1/31/15 2:00:40.413 PM networkd[168]: +[NETLedBelly stopFastFail] Clearing ledbelly failure cache
1/31/15 2:00:40.519 PM com.apple.xpc.launchd[1]: (com.asb.toggleairport) Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
If somebody sees something that can explain why this is happening please let me know.  It's driving me crazy!!
Thanks.

Wi-FI connection drops
Wi-Fi Problems in OS X Yosemite
Wi-Fi Problems in OS X Yosemite (2)
Wi-Fi Problems in OS X Yosemite (3)
Wireless Diagnostics
Also try turning off Bluetooth.
Wireless Connection Problems - Fix
Wireless Connection Problems - Fix (2)
Wireless Connection Problems - Fix (3)
Wireless Connection Problems - Fix (4)

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