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
2. DAeC
3. WeGlide

Manufacturer approval table

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

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

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