File invalid - common problems

"File invalid" may mean that

• your G-Record (file signature) is missing
• your G-Record (file signature) is not matching the file content
• your logger is not accepted by WeGlide

My files show up as invalid, what can I do?

1. Check if logger is listed below
2. Check if any of the next topics apply to you (downloaded from platform, doubleseater..)
3. Contact your logger manufacturer (with the original file)
4. If they say everything is correct, please contact us

For advanced users, read "How can I check files myself?" below.

Files from other platforms

Files downloaded from other platforms may be invalid if they were downloaded from a different account than they belong to. If the G-Record (near the end of any igc-file, line starting with "G") starts with "G123" this is most certainly the case.

Files from LXNAV double seaters

IGC-Files from LXNAV double seater units are only valid if exported from the main device.

Old Flarm files

Old Flarm files (before 2014) will show up as invalid because the signature was changed.

Date incorrect

An incorrect date on a flight indicates a defective logger. The date can not be changed retroactively, as it is part of the file signature, changing it invalidates the flight. Old LXNAV devices with the date error in the firmware are an exception, WeGlide detects such files and shows the correct date (even though the wrong date persists in the file to not invalidate it).

Merging two valid files

This changes the file content and therefore makes the file signature invalid. Resulting in an invalid flight.

Approved loggers

Every approval level includes the levels below it.

1. IGC valid (for official records, national and WeGlide contests)
2. National Contest valid (for national and WeGlide contests)
3. WeGlide Contest valid (for WeGlide contests)

Manufacturer approval table

If you think your logger is missing, please send us an email to info@weglide.org

TLC	Manufacturer	Approval
XXX	WeGlide	National Contest valid
ACT	Aircotec	IGC valid
CAL	Cambridge	IGC valid
CAM	Cambridge	IGC valid
CNI	ClearNav	IGC valid
NKL	ClearNav	IGC valid
NAV	Naviter Oudie-IGC	IGC valid
XCM	SeeYou Mobile, Oudie	WeGlide Contest valid
XNA	Naviter Hyper	WeGlide Contest valid
DSX	DSX Data Swan	IGC valid
EWA	EW Avionics	IGC valid
FLA	Flarm	IGC valid
GCS	Garrecht Avionik	IGC valid
IMI	IMI Gliding Equipment	IGC valid
LGS	Logstream SP	IGC valid
LXV	LXNAV	IGC valid
LXN	LX Navigation	IGC valid
NTE	New Technologies	IGC valid
PFE	PressFinish Electronics	IGC valid
TRI	Triadis Engineering	IGC valid
ZAN	Zander Segelflugrechner	IGC valid
SCH	Scheffel Automation	IGC valid
SDI	SDI	IGC valid
XFL	FLARM	National Contest valid
XFW	FlyWithCe	National Contest valid
FIL	Filser	WeGlide Contest valid
XCS	XCSoar	WeGlide Contest valid
XLF	Lufty	WeGlide Contest valid
RCE	RC Electronics	WeGlide Contest valid
XBA	iGlide	WeGlide Contest valid
XLK	LK8000	WeGlide Contest valid

How can I check files myself?

Requirements:

• Windows (any, tested with 7 and 10)
• x86 platform (any Intel or AMD processor will do)

Steps:

1. Download "IGC Shell program for Validation of IGC files" and unpack everything
2. Download the correct DLL and put it in the same folder as the previously unpacked "IGCshell.exe"
3. Start "IGCshell.exe" and click "OK" on any errors (ports unavailable and similar)
4. Select your logger manufacturer in the top bar
5. Click on "Validate" and select your IGC-File
6. The result will be presented in a pop-up

Different description can be found here