That is odd. In the download link for X2 Producer should be a bunch of files including DimPro:
1. 00_SONAR_X2_Installation_Instructions_Link.rtf
2. 01_Read_This_First.exe
3. 02_SONAR_X2_Producer.part1.exe
4. 02_SONAR_X2_Producer.part2.exe
5. 02_SONAR_X2_Producer.part3.exe
6. 02_SONAR_X2_Producer.part4.exe
7. 03_Loops_And_One_Shots.part1.exe
8. 03_Loops_And_One_Shots.part2.exe
9. 03_Loops_And_One_Shots.part3.exe
10. 04_Dimension_Pro_1.5_Expansion_Packs.zip11. 04_Dimension_Pro_1_5_Setup.exe12. 05_SONAR_X2_Producer_Additional_Content.exe