SessionGroup = Reading config failed

If i specify SessionGroup as described in manual. tor stops with error.

torrc:

SocksPort 9051 SessionGroup=1

Jun 15 16:46:24.700 [warn] Invalid SocksPort option '"SessionGroup=INT"'

Jun 15 16:46:24.700 [warn] Failed to parse/validate config: Invalid SocksPort/SocksListenAddress configuration

Jun 15 16:46:24.701 [err] Reading config failed--see warnings above.

second try

SocksPort 9051 SessionGroup=INT

Results into:

Jun 15 16:46:35.677 [warn] Invalid SocksPort option '"SessionGroup=1"'

Jun 15 16:46:35.678 [warn] Failed to parse/validate config: Invalid SocksPort/SocksListenAddress configuration

Jun 15 16:46:35.677 [warn] Invalid SocksPort option '"SessionGroup=1"'

Jun 15 16:46:35.678 [warn] Failed to parse/validate config: Invalid SocksPort/SocksListenAddress configuration

Jun 15 16:46:35.678 [err] Reading config failed--see warnings above.

Trac:
Username: acceleraTor

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