Hi Ken,
First of all a big THANK YOU for developing, perfecting and maintaining this great piece of software. It is making our life much easier so we can actually sleep at night while the astro images are rolling in at a steady pace...
Have you consider start co-working with other developers to spread the workload? There must be more programmers amongst the SGP user base...
Take care and enjoy your sabbatical leave, the software is great as it is...
regards,
Rob Musquetier
The Netherlands