I have suddenly started having an issue with the approach button not activating the glidepath when flying an LPV capable RNAV approach. Normally when pushing the APPR button just before the IAF the status on the PFD will show GP in white and, when the glideslope is captured and the diamond moves down to the center, the GP changes from white to green in the status bar and down you go. For the last couple of days, not matter how many times I push the approach button during an active RNAV LPV approach, the GP will not arm (no GP indication whatsoever on the PFD). I am using VPATH to get me to the IAF and am at the proper altitude.I have flown these approaches many times before without the issue. I have tried with different aircraft and at different airports and even with an empty community folder, but the problem persists. The APR button does still activate the glidepath when doing an ILS approach and tuned to the correct frequency for the ILS.
I am wondering if anyone else is experiencing this or if any of you can offer some suggestions for me to try and fix this.
Thanks.