I Get 'VI_ERROR_INV_OBJECT'

Hello

I try to understand

Example 10-1 Page 10-6 in the NI-VISA User Manual

All what I do I

status = viOpenDefaultRM(&defaultRM);

status = viClose (defaultRM);

I got, when I Close the Handle 'VI_ERROR_INV_OBJECT'

If I do the whole Example I got a access violation

when I close it with

viClose (flist);

viClose (defaultRM);

If I don't close the handles the Application is running Properly,

but I don't thing that this is OK