Using the latest master version with this configuration, serving the app from file (i.e. file://[path-to-plume]/index.hml).
{
"owners": ["https://mag.solid.community/profile/card#me"],
"title": "Mathias Kahl's Blog",
"tagline": "About software development",
"picture": "img/logo.svg",
"fadeText": true,
"showSources": true,
"cacheUnit": "days",
"defaultPath": "posts",
"postsURL": "https://mag.solid.community/public/blog/posts/"
}
The following error shows:

Sorry for the German; but it says: XML processing error: not well-formed address [...]/config.json, row 1, column 1.
What I found curious is the LocalStorage key that was used: null/C:/Users/mform/Code/solid-plume/index.html. The null is problem not intended. And the content is:
{"user":{},"config":{"owners":["https://mag.solid.community/profile/card#me"],"title":"Mathias Kahl's Blog","tagline":"About software development","picture":"img/logo.svg","fadeText":true,"showSources":true,"cacheUnit":"days","defaultPath":"posts/","postsURL":"https://mag.solid.community/public/blog/posts/","saveDate":1538730028086}}```
This error does not appear when I serve it through a webserver. Either way it doesn't "find a blog url", but that is another issue.
Using the latest master version with this configuration, serving the app from file (i.e.
file://[path-to-plume]/index.hml).{ "owners": ["https://mag.solid.community/profile/card#me"], "title": "Mathias Kahl's Blog", "tagline": "About software development", "picture": "img/logo.svg", "fadeText": true, "showSources": true, "cacheUnit": "days", "defaultPath": "posts", "postsURL": "https://mag.solid.community/public/blog/posts/" }The following error shows:

Sorry for the German; but it says:
XML processing error: not well-formed address [...]/config.json, row 1, column 1.What I found curious is the LocalStorage key that was used:
null/C:/Users/mform/Code/solid-plume/index.html. The null is problem not intended. And the content is:{"user":{},"config":{"owners":["https://mag.solid.community/profile/card#me"],"title":"Mathias Kahl's Blog","tagline":"About software development","picture":"img/logo.svg","fadeText":true,"showSources":true,"cacheUnit":"days","defaultPath":"posts/","postsURL":"https://mag.solid.community/public/blog/posts/","saveDate":1538730028086}}``` This error does not appear when I serve it through a webserver. Either way it doesn't "find a blog url", but that is another issue.