Your image is too big dimension-wise. Banner Images must be 493 × 58 and your image is 500 × 63, causing it to be resized.
See Customizing Built-in WixUI Dialog Sets
By the way: nice to see Synergy2 is finally getting an update!
Your image is too big dimension-wise. Banner Images must be 493 × 58 and your image is 500 × 63, causing it to be resized.
See Customizing Built-in WixUI Dialog Sets
By the way: nice to see Synergy2 is finally getting an update!
Andrew's right. It's covered in wix.chm.
Those are the wrong dimensions. From the relevant wix documentation topic:
Replacing the default bitmaps
The WixUI dialog library includes default bitmaps for the background of the welcome and completion dialogs and the top banner of the other dialogs. You can replace those bitmaps with your own for product branding purposes. To replace default bitmaps, specify WiX variable values with the file names of your bitmaps, just like when replacing the default license text.
Variable name / Description / Dimensions:
- WixUIBannerBmp / Top banner / 493 × 58
- WixUIDialogBmp / Background bitmap used on the welcome and completion dialogs / 493 × 312
- WixUIExclamationIco / Exclamation icon on the WaitForCostingDlg / 32 × 32
- WixUIInfoIco / Information icon on the cancel and error dialogs / 32 × 32
- WixUINewIco / Button glyph on the / BrowseDlg 16 × 16
- WixUIUpIco / Button glyph on the BrowseDlg / 16 × 16