LCR meter E4980 usb communication stuck and stop readings until I turn it off

[PincoG]

I'm trying to use E4980 LCR meter, after using many others LCR meters, for example more advanced E4990.

But E4980 stuck my VISA libraries, when i try to read.

Sometimes I get unexplicable errors like -1073807360 & -1073807240. 

But most of the times the read instructions take me to a stucked situation that i solve only turning off the LCR.

Very strange that MAX test panel seems to work with no problems, until I try to open a VISA session with Labview.

The instrument by itself has seen by the pc control panel as an IVI instrument, is this correct?

[PincoG]

I found that the problem is inside the init routine.

I replaced the init routine included in the driver of E4980 with the one of the E4280, now it's working.

I tried to exclude CLEAR and option of VISA Open, but I don't solved the problem.