TortoiseSVN-1.7.4.22459 :Server sent unexpected return value (400 Bad request)

There is error as shown below when updating and using TortoiseSVN-1.7.4.22459
to check-out source. Please advice!!! Last time, there is no issue when
using TortoiseSVN-1.6 version. Thanks! Is server issue or tortoise tool
issue?

Unable to connect to a repository at URL

'http://android-wifi-tether.googlecode.com/svn/trunk/%20android-wifi-tether-read-only'
Server sent unexpected return value (400 Bad request) in response to OPTIONS
 request for

'http://android-wifi-tether.googlecode.com/svn/trunk/%20android-wifi-tether-read-only'

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