Connection to external hard drive fails since installing AEBS 7.4.2

Since installing 7.4.2 the connection to my external hard drive connected to the AEBS fails. I have used this hard drive for backup successfully for quite some time and now since 7.4.2 this problem exists. If I shut off the hard drive and turn it back on I can sometimes make it through a complete Time Machine backup but sometimes not. The hard drive works perfect when connected directly to my MacBook. Any suggestions. Has anyone else had this issue since installing AEBS 7.4.2
Thanks,
Raine

Many people have experienced this problem. If you do a search for "7.4.2" you will find many posts. The universal solution seems to be to downgrade to 7.4.1. This is accomplished from AirPort Utility by clicking on Base Station:Upload Firmware while holding down the Option key and then selecting the previous version.

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