Did the allies lay the seeds for future problems in the peace settlement of 1919?

Yes, it is unfortunate but it's true.

Explanation:

Many provisions of the Treaty of Versailles were too harsh and amounted to a huge humilliation of Germany. In the first place, it imposed severe limitations on the size of the German army, on its types and system of weapons and established a demilitarized zone along the Franco-German border in the Rhineland. Secondly, it included a so-called "guilty clause" that blamed Germany for starting WWI; this was particularly outrageous and unfair in the eyes of the German people, causing much resentment. Thirdly, the gigantic war reparations demanded by the Allies also became a motive of deep dissatisfaction; due to huge economic troubles in the 1920s, the German postwar governments stop paying them. So, all of these factors and unfortunate demands sowed the seeds of a new conflict.

Yea they did. They blamed everything on Germany and wanted them to pay for the damage caused. There were also a lot of rules set in place for example that they could only have a limited military and no Air Force. All of these things brought Germany into a Great Depression which eventually led to Hitler gaining control. The tension the treaty caused eventually set the stage for the beginning of world war 2. You could even argue that is the same war just separate half's.