Error message | File memory cannot be found

When the software indicates it cannot find the memory of photo file x when opening/ordering a project, then the file in question is too big. The solution is to tweak and decrease the file in question to the positioning size. Taking into account that the print resolution is calculated in ppi, not in ppcm; a file of, say, 30×40 cm on 300 ppcm for page size positioning in a 30×40 album is nearly 3x too big! This will have to be converted into 30×40 cm at 300ppi.