GPS Data Logger Software - BT747

Hi, would really really appreciate some help here. Was trying to convert my CSV files to GPX for Aperture. But BT747 don't seem to be able to do so. I am on iMac OSX 10.8.3. I didn't use to have this problem. Dunno what's happening here. I get this error message in the log;

Problem in file open /Users/XXXXXX/Desktop/Desktop/GPSDATA-20130419.gpx

java.io.FileNotFoundException: /Users/XXXXXX/Desktop/Desktop/GPSDATA-20130419.gpx (No such file or directory)

at java.io.RandomAccessFile.open(Native Method)

at java.io.RandomAccessFile.<init>(RandomAccessFile.java:233)

at java.io.RandomAccessFile.<init>(RandomAccessFile.java:118)

at net.sf.bt747.j2se.system.J2SERAFile.<init>(Unknown Source)

at net.sf.bt747.j2se.system.J2SEJavaTranslations.getRAFileInstance(Unknown Source)

at net.sf.bt747.j2se.system.J2SEJavaTranslations.getFileInstance(Unknown Source)

at bt747.sys.JavaLibBridge.getFileInstance(Unknown Source)

at bt747.sys.File.<init>(Unknown Source)

at gps.log.out.GPSFile.createFile(Unknown Source)

at gps.log.out.GPSFile.writeRecord(Unknown Source)

at gps.log.out.GPSGPXFile.writeRecord(Unknown Source)

at gps.log.out.GPSFile.addLogRecord(Unknown Source)

at gps.log.in.CSVLogConvert.parseFile(Unknown Source)

at gps.log.in.CSVLogConvert.toGPSFile(Unknown Source)

at bt747.model.Controller.doConvertLog(Unknown Source)

at bt747.model.Controller.doConvertLog(Unknown Source)

at bt747.j2se_view.J2SEAppController.convertLog(Unknown Source)

at bt747.j2se_view.J2SEAppController$4.run(Unknown Source)

Anyone? Thanks much in advance!