The scan to be dropped is not in the current index. This is most likely due to a typing error. End of current index encountered LAS, DROP command with argument NEXT . The end of the index has been reached. The value to be encoded in sexagesimal form is out of valid range.
New data has been found in the input file, execution resumes.
A read error occured while reading the header block of the input file when looking for new data. Retry, this is usually due to an interlock problem. If the error persists, check that no more than 2 processes are accessing the specified file. The new data found is of a different type than the current one. Switching to the new type occured.