The error - which has resulted in the deadline for the King's Cross-based contest being pushed back nearly a fortnight - appears almost identical to the howler that occurred in the New Islington bridge competition, reported by the AJ yesterday ( Scale slip-up causes comp chaos ).
According to one contestant hoping to enter the New Horizon competition there was an obvious 'discrepancy' between the scale on the jpeg plans and those on the drawings and the Ordnance Survey site plan.
It is still hoped that the contest to redesign the existing 1968 day centre building will attract a mass of up-and-coming practices.
However, the gaffe will add to growing concern about the competency of the institute's Leeds-based office.
One contestant told the AJ: '[The error] has protracted a very straightforward brief and does not give confidence in their ability to provide accurate information.'
The deadline for submissions is 20 March 2007.