Rated 5 out of 5 stars

Since SeaMonkey 2.33 appeared infoRSS stopped working. I don't know what to do.
It was an outstanding extension for years. Now the time has come... Farewell my dear friend!
Five stars on the tombstone.

Rated 5 out of 5 stars

I have to review my opinion once again.
You can forget about “Permission to read file was denied” (1.3.0) or the total disappearance of the addon (1.4.2). The addon can be compatible with my SeaMonkey at the following conditions.
a. Download 1.3.0, not 1.4.2.
b. Open the downloaded file with any archiver.
c. Find install.rdf.
d. Open it with any text editor.
e. Find the text em:id="{92650c4d-4b8e-4d2a-b7eb-24ecf4f6b63a}"
f. Find the text (just right after the em:id) em:maxVersion=
g. Replace the digits between the quotes with 2.99 or something like that (to make it compatible with SeaMonkey 2.6.1 and any new version).
h. Save install.rdf.
i. Save changes.
j. Open install.js and find extVersion : '1.3.0', then replace '1.3.0' with '1.9.9' to prevent automatic updates, and save changes.
k. Open your inforss-bla-bla-bla.xpi again.
l. Find CHROME and open it.
m. Open inforss.jar and put // mark in the beginning of every line containing "netscape.security.PrivilegeManager.enablePrivilege" in the following files:
inforss.js
inforssIO.js
inforssOption.js
inforssRDFRepository.js.
n. Save the changes.
o. Save your inforss-bla-bla-bla.xpi.
p. Drag and drop inforss-bla-bla-bla.xpi to SeaMonkey.