LAUNCHXL-CC3235S: Error: No Cmd Ack detected [cmd opcode = 0x8466] CSR demo

NOTE:

I saw in the datasheet, that the response to this error is to call sl_Stop() and sl_Start(). This did not work for me. I threw the retries in the while() loop as seen below. Stopping and starting the device did not work. I am at a loss due to lack of resources on this topic.

int main(void)
{
/* Call driver init functions */
Board_init();

/* Start NoRTOS */
NoRTOS_start();

/* Call mainThread function */
mainThread(NULL);

while(1)  // This while loop was empty initially to handle errors
{
sl_Stop(10);
sl_Start(0, 0, 0);
mainThread(NULL);
}
}

what SP is installed on your device?

Please make sure you are using the latest (SP4.11.0.0 from SDK5.20).

Do you mean Service Pack? I tried looking, but I'm not sure how to see what Service pack I have.
I have confirmed that I am using SDK 5.20.

I have these two sub-directories inside C:/ti  :
simplelink_academy_cc32xxsdk_5_20_00_00
simplelink_cc32xx_sdk_5_20_00_06

I now see  sp_4.11.0.0.bin and .UCF files inside the SDK directory. I also see 3.20 files. 
I have 4.11.0 files inside the servicepack-cc3x35 directory and
I have 3.20 files inside the servicepack-cc3x20 directory.

These sub-directories are located at:
C:\ti\simplelink_cc32xx_sdk_5_20_00_06\tools\cc32xx_tools

Should I delete the cc3x20 folder?

Thank you