Bug when creating a manual backup with the "LoMaps and other vector maps" option enabled.

Hi,

how do you trigger the manual backup of "LoMaps and other vector maps"? Where do you store the backup? What storage do you select?

I've tried saving locally and to dropbox.

Hi,

could you please create a bug report after the app crash and send the report file? Thanks. More info: https://docs.locusmap.eu/doku.php?id=manual:faq:issue_reporting

Error Details (from logcat)

On Honor 20:

E/q (26484): backupDataSync(2026-08-12_08-07-32, [...], false)

E/q (26484): java.util.zip.ZipException: duplicate entry: mapsVector/_themes/AdventureV4.zip

On Samsung A40:

E/q (14962): backupDataSync(2026-08-12_08-09-00, [...], false)

E/q (14962): java.util.zip.ZipException: duplicate entry: mapsVector/_themes/Tiramisu.zip

Suggested Cause

The backup routine appears to scan the mapsVector/_themes/ directory and add files to the ZIP archive, but the same file (or entry) is being added twice. This could be due to:

Duplicate entries in the file list (e.g., symbolic links, or the same file referenced via different paths).

A logic error in the directory traversal that processes the same file more than once.

An issue with how the backup manager handles theme files that may be stored in multiple locations.

Thanks, we managed to identify and fix the bug. Please wait for the next app version.

I have the same issue with Android 13 after updating to 3.70.20 to use the Wear OS remote control app (previously I was using 3.70.17 from the Play Store). Please post here when you'll release the fix.

Hi guys, are there any news about the fix for v3.70.20?

I'm experiencing the same with both manual backup and automatic backup (the latter leaves a notification about the failure).

Logcat extract:

09-12 10:31:33.645 10391 22507 22557 E q       : backupDataSync(2026-09-12_10-31-23, [E6.e@7be1046, E6.b@1067207, E6.a@ee6df34, E6.a@687115d, E6.a@9baead2, E6.a@88e27a3, E6.c@facbaa0, E6.c@5286659, E6.b@338e21e, E6.a@5519aff, E6.d@132e0cc, E6.d@cf00f15], false)
09-12 10:31:33.645 10391 22507 22557 E q       : java.util.zip.ZipException: duplicate entry: mapsVector/_themes/Elements/Elements.png
09-12 10:31:33.645 10391 22507 22557 E q       : 	at java.util.zip.ZipOutputStream.putNextEntry(ZipOutputStream.java:246)
09-12 10:31:33.645 10391 22507 22557 E q       : 	at l9.a.b(SourceFile:232)
09-12 10:31:33.645 10391 22507 22557 E q       : 	at l9.a.b(SourceFile:266)
09-12 10:31:33.645 10391 22507 22557 E q       : 	at l9.a.b(SourceFile:266)
09-12 10:31:33.645 10391 22507 22557 E q       : 	at E6.d.d(SourceFile:18)
09-12 10:31:33.645 10391 22507 22557 E q       : 	at k9.v.c(SourceFile:291)
09-12 10:31:33.645 10391 22507 22557 E q       : 	at k9.q.invokeSuspend(SourceFile:22)
09-12 10:31:33.645 10391 22507 22557 E q       : 	at sj.a.resumeWith(SourceFile:9)
09-12 10:31:33.645 10391 22507 22557 E q       : 	at Sk.L.run(SourceFile:115)
09-12 10:31:33.645 10391 22507 22557 E q       : 	at Zk.a.run(SourceFile:96)

Right... so after just posting a new topic regarding backup issues, there is a known backup bug in LM v3.70.20?

Okay, my post about the issue has been merged with this one so I'm guessing it's the same known bug.
I use LMC a lot, so knowing my tracks & points etc are not being backed up automatically is a bit worrying.
I see it's been over a month since this bug was identified... any time-scale when a fixed version of LMC be released?

Thanks :)

Hi all,

Locus Classic 3.70.21 has just been added to https://bit.ly/lmVersions.

Just updated and so far so good...
Locus happily accepted my custom backup folder location and moved my backups back to where I originally stored them.
Fingers crossed by tomorrow morning I should have a gleaming new automatic backup waiting for me. :)
Many thanks!

Yep, 3.70.21 works for me, too.

Thank you very much!

Not good news I'm sorry to say.

The automatic backup is still failing and filling my SD card with .temp files.

Since updating yesterday afternoon I already have 2 failed automatic backups.

Manual backups are still working.

Update...
About every 5 hours or so LMC is trying to create an automatic backup and is filling my auto folder with .temp files of various sizes.
When does the automatic backup run as it appears to be attempting to create them whilst I'm using my phone?
My phone is an old Samsung Galaxy S8 which hasn't received any OS updates for years (and never will).
I'm going to have to turn off automatic backup until sorted as it's eating up the spare space on my SD card and slowing my phone down whilst it tries to backup.
Fingers crossed a fix is released soon.
All the best...

Please try turning off the backup of "LoMaps and other vector maps" and test the automatic backup again. Thanks.

Hi...
Thanks for coming back so quickly.
Okay I've switched the option off... which should've been off anyway.
My collection of maps is large at nearly 56GB so I've never backed them up using the auto backup.
Did/could the buggy update have switch the option back on again?
All the best...

Bingo... the automated backup is working again!
I've never backed up the maps, so I'm guessing the buggy update must've turned the option back on (but I hadn't noticed).
Just for fun I did a dump of the Android jobscheduler and it was having a right hissy fit as the LM backup kept failing!
Thanks for your patience and help. :)