Hi David,

T‌here have been no recent updates that would change any behavior relating to Title Blocks.

T‌he logo substitution functionality operates as follows;
1‌) If the Title Block template file is in the default program installation folder (e.g. "C:\Program Files (x86)\Stardraw.com Ltd\Stardraw Design 7.2") then the image from the template will be substituted with the Company Logo stored in Tools | Personalization | Personal Details.
2‌) If the Title Block template file is somewhere else, i.e. it is a custom Title Block template, then no images will be substituted; we just use whatever image(s) is in the template, because it's custom. ‌ ‌

I‌f you are working in scenario (1) and you see no logo image at all, it is likely that the image substitution has failed, for example if you've changed the personal logo ‌file and it's now a very large image; this could cause an "Out of Memory" error.
‌‌
Question 1: W‌hen you insert a Title Block, do you see the default Stardraw logo, or do you see no logo at all?
Q‌uestion 2: What changes, if any, have you made to either Tools | Personalization or the Title Block template since image substitution last worked?