ISSUE SUMMARY:
There is a code in brackets in some places where it should display link with the number of users.

I've checked "de-DE.com_community.ini" and "en-GB.com_community.ini" and the translation looks good.

en:
COM_COMMUNITY_STREAM_OTHERS_JOIN_GROUP=" and <a href=_QQQ_#_QQQ_ %2$s>%1$s others</a> have"

de:
COM_COMMUNITY_STREAM_OTHERS_JOIN_GROUP="und <a href=_QQQ_#_QQQ_ %2$s>%1$s Andere</a> haben"

STEPS TO REPLICATE:
1 Login
2 Go to my profile

RESULT
{multiple}{actors}{/multiple}{single}{actor}{/single}

EXPECTED RESULT
Display link with number of users

BROWSER
Chrome Version 42.0.2311.90 m

Hi,

Please you also check this string

COM_COMMUNITY_GROUPS_GROUP_JOIN=" joined the group <a href=_QQQ_%1$s_QQQ_>%2$s</a>"