The Notes Migrator for Exchange Directory Export does not discover any Notes mailfiles. (4240770)

The Notes Migrator for Exchange (NME) Directory Export does not discover any mailfiles which makes migrating a collection impossible.

In the NME Directory Export logfile the following errormessage might be logged:

12:01:31 DEBUG: Retry bulk insert: TriesUsed=5, TriesAllowed=5
12:01:44 DEBUG: (323) CFGDB::GetRs: Enter
12:01:44 DEBUG: CFGDB::GetRs: Exit(0.601752 ms.)
12:05:16 ERROR: [2336-122-33-80040E14] Unable to perform BULK INSERT into database
12:05:16 Open(BULK INSERT FROM '\\SERVERNAME\D$\Program Files\Quest Software\Quest Notes Migrator for Exchange\bulk\T_NMEAddresses-SERVERNAME-3584.tsv' INTO 'T_NMEAddresses'):
12:05:16 Error: Could not allocate space for object 'dbo.SORT temporary run storage: 159910314049536' in database 'NME40DB' because the 'PRIMARY' filegroup is full. Create disk space by deleting unneeded files, dropping objects in the filegroup, adding additional files to the filegroup, or setting autogrowth on for existing files in the filegroup.
12:05:16 Error 80040E14