[V4RB] error -61 - why?

[peter salomon]

Hi Ruslan,
while learning rb i have a problem on adding a record in API way:

i have as example:

AtableRef = mydatabase.table("ATable")

AtableRef.Field("fldA").value = "aaa"
AtableRef.Field("fldB").value = "bbb"
AtableRef.Field("fldC").value = "ccc"

call AtableRef.Addrecord


I get here  an VException with the errorcode -61 (on MacOS) , which is 
"file locked" as i remember (?). But vdb file is not locked in finderinfo...

Do you know as fast idea what could be the reason?
Do there exist recordlocks also in API way?

Peter