SUMMARY

When having a "Counter" clip in Project Bin (generated through "Project"->"Generators"->"Counter"), the project can't be archived because "You have 1 missing clip in your project".

STEPS TO REPRODUCE

1. Create empty project (with whatever project settings - mine is default "HD 1080p 25 fps")
2. Add a "Counter" clip with "Project"->"Generators"->"Counter" then "OK" with default config (store the resulting file anywhere, e.g. "/tmp/count.mlt")
3. Try to archive project through "Project"->"Archive Project"

OBSERVED RESULT

Generated "/tmp/count.mlt" file is listed in "Playlist clips" category which is correct I think.
"You have 1 missing clip in your project" warning is displayed : the missing file is in "Other clips" category, announced path is "/home/user/kdenlive/<producer>". "<producer>" is displayed as is, and for sure doesn't exists.

EXPECTED RESULT

No clip should be missing and no erroneous "[...]/<producer>" file should be looked for.

SOFTWARE/OS VERSIONS

Stable AppImage versions 20.04.0-x86_64 and 19.12.3-x86_64
Host is running linux Debian Unstable (up to date) with Gnome 3

ADDITIONAL INFORMATION

I locally fixed this issue with the following patch (for both 19.12.3 and 20.04.0 branches), assuming "Counter" playlist depends on no other resource the same way as "Color" clip does :

---
 src/project/dialogs/projectsettings.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/project/dialogs/projectsettings.cpp b/src/project/dialogs/projectsettings.cpp
index cd7f1e544..eea0bb2d5 100644
--- a/src/project/dialogs/projectsettings.cpp
+++ b/src/project/dialogs/projectsettings.cpp
@@ -576,7 +576,7 @@ QStringList ProjectSettings::extractPlaylistUrls(const QString &path)
     for (int i = 0; i < files.count(); ++i) {
         QDomElement e = files.at(i).toElement();
         QString type = Xml::getXmlProperty(e, QStringLiteral("mlt_service"));
-        if (type != QLatin1String("colour")) {
+        if ( (type != QLatin1String("colour")) && (type != QLatin1String("count")) ) {
             QString url = Xml::getXmlProperty(e, QStringLiteral("resource"));
             if (type == QLatin1String("timewarp")) {
                 url = Xml::getXmlProperty(e, QStringLiteral("warp_resource"));
--