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The issues seen last week of NGS CORS Base files unsuccessfully downloading directly using the System Defined base provider list in Trimble GPS Pathfinder Office’s Differential Correction Wizard and in the Trimble Positions Desktop add-in’s Processing Profiles has been resolved.  Base data should be available from all NGS Base stations during the time frame you received this error message.

We’ve extensively tested this using a few NGS CORS stations this morning.  Base files were successfully downloaded through the Trimble GPS Pathfinder Office Differential Correction Wizard using the System Defined list.  All files processed as normal.

Original error message:

Successfully found or downloaded 1 of 1 files.
Unable to extract base data from C:Users....BaseCORS, KENNECOTT1UT2005 (P086),  UTAH (ITRF00 (1997)-Derived from IGS08 (NEW))p08609814181.zip. This file may be empty, or corrupted, or an unsupported version (please refer to the software documentation)
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More information about the original processing error message and steps to manually download and process base files from the User Friendly CORS site can be found here:

NGS CORS Base Data Unavailable (4-12-14)