[Skimmertalk] Skimmer Server/QS1R: "Invalid floating point operation" error at startup

[Bob Wilson, N6TV]

When things like this happen:

   1. Exit Skimmer Server and all other SDR software
   2. Power OFF the QS1R (at the power supply)
   3. Wait about 15 seconds
   4. Power ON the QS1R
   5. Wait about 30 seconds for Windows to recognize it
   6. Start Skimmer Server

Programs like SDRMAX/Winrad/HDSDR etc. do not leave the QS1R in a state
where it will accept the custom FPGA code loaded by Skimmer Server.  Hence
the need to power up the QS1R "clean" before starting Skimmer Server.

73,
Bob, N6TV

On Wed, Nov 13, 2013 at 10:22 PM, Jeffrey Maass K8ND <jmaass at k8nd.com>wrote:

 Tracking down some drop-outs when recording Skimmer Server (with QS1R), I
>
>> wanted to update the USB driver from version 1.0.0.0 to the newer one,
> which
>
>> I saw mentioned online somewhere as version 1.2.6.
>
>>
> The only way I could find to install a newer version of the USB driver for
>
>> the QS1R was to uninstall my ancient copy of SDRMAXII and install the
> latest
>
>> SDRMAXV. I also installed the MS Visual C++ 2010 (x86) stuff, as
>
>> MSVCP100.dll was initially reported as missing.
>
>>
> The USB driver is now identified as 'libusbK' version 3.0.5.16.
>
>>
> SDRMAXV appears to work correctly, but when I shut down SDRMAXV and start
>
>> Skimmer Server (version 1.30), I get the message "Invalid floating point
>
>> operation".  It seems to skip the step of loading software to the QS1R.
>
>>
> The Skimmer Server and RBN Aggregator had been running successfully for a
>
>> few years before my upgrade activity tonight.
>
>>
> What have I missed?
>
>>
> 73,  Jeff K8ND
>
>>