The Contrast Factor and Pre-gamma slider values are not saved to the database using "save current parameters". They are saved to the txt file though.
INSERT INTO "mantiuk06" VALUES(0,NULL,0.8,4.0,0.7,'sunny');
CREATE TABLE mantiuk08 (colorSaturation real, contrastEnhancement real, luminanceLevel real, manualLuminanceLevel boolean NOT NULL, pregamma real, comment varchar(150));
ps. the "milestone" combobox here lacks a "git head" or "2.4.1-SNAPSHOT" option.
I fixed the entry from a sqlite shell. ContrastFactor is read correctly, but pre-gamma is not - see bug #195.