DriftScope does not open or process data files - WKB59389

Article number: 59389

SYMPTOMS

When particular data files are opened in DriftScope, no data is displayed in any of the panes

The problem files may appear to open, but because the spectra and mobilograms are not rendered, they open more quickly than good data files
If the files do open, the m/z scale may be set to 0-200, even if that's not the range over which the data was acquired; correcting the m/z range does not make the data display properly
If you select one of the options to run peak detection automatically when opening files, peak detection fails
If peak detection fails, the my_file_name_Apex3D_log.txt file in the Apex3D folder within my_file_name.raw contains the following message:

Processing ADC data file
No Low Energy Data found
No High Energy Data found
No Data to process
Error: No Data to process
Exiting

Nonalphanumeric characters at the end of the $$ Cal MS1 Dynamic Params: line of the _Header.txt file in the .raw folder of the affected files

For example, a problem file will look like this:

$$ Cal MS1 Dynamic Params: 50,1200,0.0000,0.00,0.0,0.0,0.0,ESI_NaFormate_Pos,190208_Dovile_PosNeg_50-1200-201œŒ¿

It should look like this:

$$ Cal MS1 Dynamic Params: 50,1200,0.0000,0.00,0.0,0.0,0.0,ESI_NaFormate_Pos,190208_Dovile_PosNeg_50-1200-201

Close DriftScope.
Go to the .raw folder of the affected file and open the_Header.txt file using a text browser such as Notepad.
Find the line that starts with "$$ Cal MS1 Dynamic Params:".
Delete any nonalphanumeric characters from the end of that line.
Save the header file.
Restart DriftScope.
Reopen the data. Mobilogram should open automatically, the m/z range should correspond to the range actually acquired, and peak detection should now run correctly.

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