Model is underconstrained.
The following variables couldn't be defined:
 * PKACII_RyR in component PKACII_RyR
 * RyR in component RyR
 * PP1_RyR in component PP1_RyR
 * RyRp in component RyRp
 * PP2A_RyR in component PP2A_RyR
 * RyRtot in component RyRtot
 * RyRptot in component RyRptot
 * KMrel in component KMrel
 * KMrel0 in component KMrel
 * TnI in component TnI
 * PKAC in component TnIp
 * PP2A in component TnIp
 * KMTnC in component KMTnC
 * KMTnC0 in component KMTnC
 * d/dt RyRptot in component RyRptot
 * d/dt TnIp in component TnIp