Troubleshooting guide

There are two sources of this driver, the Davis support website and then the website of the manufacturers of
the USB chip inside the logger, which is SiLabs. The version available from Davis will have been checked
by Davis for correct operation with Weatherlink, but the most recent driver versions will naturally be
available from SiLabs. We suggest that you first try the version from Davis; and then if this fails to work try
the SiLabs website. Download links are as follows:
• Davis – toolbox.davisnet.com/downloads/ (Drivers section)
• SiLabs – www.silabs.com/products/mcu/Pages/USBtoUARTBridgeVCPDrivers.aspx (Be sure to select
the Mac OSX version for download)
NB On the SiLabs site the driver is referred to as: ‘CP210x USB to UART Bridge VCP Driver’
WL for Mac fails after updates eg to Yosemite 10.10.3
Apple do provide updates to the OSX version from time to time and after an update it’s possible that
Weatherlink for Mac (and indeed many other programs), previously running without problems, may stop
working. Typically this will happen because the OSX update has broken some aspect of the operating
environment and not because the WL for Mac program is fundamentally incompatible with the updated OSX
version. The fix will involve trying to identify which part of the environment has broken and then mending
that.
WL for Mac is written in Java and so one potential cause of upgrade problems is that the updated OSX has
also updated Java to a version that may no longer be compatible with WL for Mac. There is usually a patch
or download available that will allow the latest OSX and Java versions to run with existing legacy programs
such as WL for Mac, but this patch may not be installed automatically and so will require doing manually.
This is really a problem for Apple and Oracle (who maintain Java) and not for Davis and so we can only
recommend searching for sources of help and downloads with, for example, problems and fixes associated
with running Java under the latest version of OSX.
Prodata Weather Systems Davis Weather Stations KB - Prodata Weather Systems - 1
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