Unable to add/checkout/checkin files/folders to ClearCase -

i getting strange error (see below) when trying add/checkout/checkin file/folder. never used error before. change new ucm project. has seen error?

how troubleshoot error message.

here text version (for facilitating future text search)

crmap7018: unable create m:\user1_dev_cm_training_view\training\new_folder crmap7026: unknown error.   reason: write-failed   resource: null 

i have seen similar error message when clearcase_primary_group environment variable isn't set.

it should reference primary group of vob trying access. (in cte - clearteam explorer, window -> preferences -> ibm rational clearteam explorer -> groups)

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in case, clearteam 8.0.0.6, new name ccrc, supports dynamic views, , in heterogeneous environment (windows client, unix server)

the first thing check logs:

• client logs cte
• server logs clearcase server
• system event viewer logs on client side.

if nothing obvious seems show up:

• check if there process keeping handle on m:\user1_dev_cm_training_view\training
  (one way reboot , check if issue persists)
• check if issue persists new dynamic view (and account on machine)
• check if latest patch might resolve issue (like 8.0.0.7)

i don't see mention of crmap7018 or crmap7026 on ibm.com.