It must be the season for data-logging issues.
I, too, am a newbie to WeatherCat and am having similar data-logging problems. I am using a wireless Davis VP2 with WeatherLinkUSB with a MacBook Air running OSX 10.7.5. The station is currently running on batteries.
Last night, the MacBook Air was accidentally shut down around 11:30 p.m. by my wife [sigh]. This morning (according to the WC log) when the MBA was awakened it downloaded the historical data from the station and uploaded the data to Wunderground. The problem is that the data showing in Statistics and on WU for the overnight period is the same as that showing for the last data interval before the MBA was shut down. In other words, the data values are identical for each overnight data interval. The data values are not frozen on the VP2 itself. I can see all the hourly values on the weather station's screen. Everything has been operating normally this morning following wake-up of the MBA.
For reference, my data logger interval is set to 30 minutes and the station clock is set to be synchronized.
Anyone have any suggestions?
Many thanks in advance for your help. Love WeatherCAt, but there is a learning curve.
Alex