TMPGEnc Gives Illegal floating decimal point error

A fix for this is to disable Use floating point DCT under the quantize matrix tab in setting. However you first have to disable SSE and SSE-2, and this is how...

Click Option and click environmental setting. Click the CPU tab. Unselect Enable SSE and Enable SSE-2. Then Click ok. Now click Setting and click the Quantize matrix tab. Use floating point DCT may have been automatically unselected but if not, unselect it.