Don't know if anyone ese has encountered this.
I created a theme called March 01 then found I did not need it and so deleted it. After that point every time I opened OpenLP I would get an error message that the march 01.xml file could not be found. The program would then fail to open..
I recreated a March 01 folder with xml file inside and OpenLP would open without any issue but would delete the folder as soon as it opened. This would cause a repeat of the issue next time I opened OpenLP.
The only way I could fix this was to create a new theme called Marh 01 and save it. The issue has not returned so far however I do think that this is a bug that needs attention.
Thanks for all your hard work on this superb product.