Found the following math rendering problems:
Init.Rd:80: Undefined control sequence: \ensuremath in \hat{\Ì²eÌ²nÌ²sÌ²uÌ²rÌ²eÌ²mÌ²aÌ²tÌ²hÌ²\boldsymbol{z}}âŠ
Init.Rd:80: Undefined control sequence: \ensuremath in \Ì²eÌ²nÌ²sÌ²uÌ²rÌ²eÌ²mÌ²aÌ²tÌ²hÌ²\boldsymbol{\piâŠ
Init.Rd:80: Undefined control sequence: \ensuremath in \Ì²eÌ²nÌ²sÌ²uÌ²rÌ²eÌ²mÌ²aÌ²tÌ²hÌ²\boldsymbol{\laâŠ
Init.Rd:80: Undefined control sequence: \ensuremath in \Ì²eÌ²nÌ²sÌ²uÌ²rÌ²eÌ²mÌ²aÌ²tÌ²hÌ²\boldsymbol{\piâŠ
Init.Rd:80: Undefined control sequence: \ensuremath in \Ì²eÌ²nÌ²sÌ²uÌ²rÌ²eÌ²mÌ²aÌ²tÌ²hÌ²\boldsymbol{\laâŠ
Init.Rd:80: Undefined control sequence: \ensuremath in \hat{\Ì²eÌ²nÌ²sÌ²uÌ²rÌ²eÌ²mÌ²aÌ²tÌ²hÌ²\boldsymbol{\laâŠ
Init.Rd:80: Undefined control sequence: \ensuremath in \hat{\Ì²eÌ²nÌ²sÌ²uÌ²rÌ²eÌ²mÌ²aÌ²tÌ²hÌ²\boldsymbol{\piâŠ
Init.Rd:87: Undefined control sequence: \ensuremath in \hat{\Ì²eÌ²nÌ²sÌ²uÌ²rÌ²eÌ²mÌ²aÌ²tÌ²hÌ²\boldsymbol{\piâŠ
Init.Rd:89: Undefined control sequence: \ensuremath in \hat{\Ì²eÌ²nÌ²sÌ²uÌ²rÌ²eÌ²mÌ²aÌ²tÌ²hÌ²\boldsymbol{\laâŠ
Init.Rd:91: Undefined control sequence: \ensuremath in \hat{\Ì²eÌ²nÌ²sÌ²uÌ²rÌ²eÌ²mÌ²aÌ²tÌ²hÌ²\boldsymbol{\laâŠ
Init.Rd:94: Undefined control sequence: \ensuremath in \hat{\Ì²eÌ²nÌ²sÌ²uÌ²rÌ²eÌ²mÌ²aÌ²tÌ²hÌ²\boldsymbol{\piâŠ
PoisMixClus.Rd:122: Undefined control sequence: \ensuremath in f(\mathbf{y};g,\Ì²eÌ²nÌ²sÌ²uÌ²rÌ²eÌ²mÌ²aÌ²tÌ²hÌ²\boldsymbol{\PsâŠ
PoisMixClus.Rd:124: Undefined control sequence: \ensuremath in \Ì²eÌ²nÌ²sÌ²uÌ²rÌ²eÌ²mÌ²aÌ²tÌ²hÌ²\boldsymbol{\PsâŠ
PoisMixClus.Rd:124: Undefined control sequence: \ensuremath in \Ì²eÌ²nÌ²sÌ²uÌ²rÌ²eÌ²mÌ²aÌ²tÌ²hÌ²\boldsymbol{\thâŠ
PoisMixClus.Rd:124: Undefined control sequence: \ensuremath in \Ì²eÌ²nÌ²sÌ²uÌ²rÌ²eÌ²mÌ²aÌ²tÌ²hÌ²\boldsymbol{\thâŠ
PoisMixClus.Rd:124: Undefined control sequence: \ensuremath in \Ì²eÌ²nÌ²sÌ²uÌ²rÌ²eÌ²mÌ²aÌ²tÌ²hÌ²\boldsymbol{\piâŠ
PoisMixClus.Rd:126: Undefined control sequence: \ensuremath in \Ì²eÌ²nÌ²sÌ²uÌ²rÌ²eÌ²mÌ²aÌ²tÌ²hÌ²\boldsymbol{\thâŠ
PoisMixClus.Rd:128: Undefined control sequence: \ensuremath in \Ì²eÌ²nÌ²sÌ²uÌ²rÌ²eÌ²mÌ²aÌ²tÌ²hÌ²\boldsymbol{\laâŠ
PoisMixClus.Rd:135: Undefined control sequence: \ensuremath in \hat{\Ì²eÌ²nÌ²sÌ²uÌ²rÌ²eÌ²mÌ²aÌ²tÌ²hÌ²\boldsymbol{\laâŠ
PoisMixClus.Rd:136: Undefined control sequence: \ensuremath in \hat{\Ì²eÌ²nÌ²sÌ²uÌ²rÌ²eÌ²mÌ²aÌ²tÌ²hÌ²\boldsymbol{\piâŠ
PoisMixMean.Rd:8: Undefined control sequence: \ensuremath in \Ì²eÌ²nÌ²sÌ²uÌ²rÌ²eÌ²mÌ²aÌ²tÌ²hÌ²\boldsymbol{\muâŠ
PoisMixMean.Rd:10: Undefined control sequence: \ensuremath in \Ì²eÌ²nÌ²sÌ²uÌ²rÌ²eÌ²mÌ²aÌ²tÌ²hÌ²\boldsymbol{\muâŠ
PoisMixSim.Rd:27: Undefined control sequence: \ensuremath in \Ì²eÌ²nÌ²sÌ²uÌ²rÌ²eÌ²mÌ²aÌ²tÌ²hÌ²\boldsymbol{\piâŠ
PoisMixSim.Rd:28: Undefined control sequence: \ensuremath in \Ì²eÌ²nÌ²sÌ²uÌ²rÌ²eÌ²mÌ²aÌ²tÌ²hÌ²\boldsymbol{\laâŠ
PoisMixSim.Rd:41: Undefined control sequence: \ensuremath in \hat{\Ì²eÌ²nÌ²sÌ²uÌ²rÌ²eÌ²mÌ²aÌ²tÌ²hÌ²\boldsymbol{\laâŠ
logLikePoisMix.Rd:30: Undefined control sequence: \ensuremath in \hat{\Ì²eÌ²nÌ²sÌ²uÌ²rÌ²eÌ²mÌ²aÌ²tÌ²hÌ²\boldsymbol{\piâŠ
logLikePoisMix.Rd:33: Undefined control sequence: \ensuremath in \hat{\Ì²eÌ²nÌ²sÌ²uÌ²rÌ²eÌ²mÌ²aÌ²tÌ²hÌ²\boldsymbol{\piâŠ
logLikePoisMix.Rd:36: Undefined control sequence: \ensuremath in \hat{\Ì²eÌ²nÌ²sÌ²uÌ²rÌ²eÌ²mÌ²aÌ²tÌ²hÌ²\boldsymbol{\piâŠ
plot.HTSCluster.Rd:40: Undefined control sequence: \ensuremath in \Ì²eÌ²nÌ²sÌ²uÌ²rÌ²eÌ²mÌ²aÌ²tÌ²hÌ²\boldsymbol{\laâŠ
plot.HTSCluster.Rd:40: Undefined control sequence: \ensuremath in \Ì²eÌ²nÌ²sÌ²uÌ²rÌ²eÌ²mÌ²aÌ²tÌ²hÌ²\boldsymbol{\piâŠ
plot.HTSCluster.Rd:41: Undefined control sequence: \ensuremath in \Ì²eÌ²nÌ²sÌ²uÌ²rÌ²eÌ²mÌ²aÌ²tÌ²hÌ²\boldsymbol{\laâŠ
plot.HTSCluster.Rd:42: Undefined control sequence: \ensuremath in \Ì²eÌ²nÌ²sÌ²uÌ²rÌ²eÌ²mÌ²aÌ²tÌ²hÌ²\boldsymbol{\piâŠ
probaPost.Rd:23: Undefined control sequence: \ensuremath in \hat{\Ì²eÌ²nÌ²sÌ²uÌ²rÌ²eÌ²mÌ²aÌ²tÌ²hÌ²\boldsymbol{\piâŠ
probaPost.Rd:29: Undefined control sequence: \ensuremath in \Ì²eÌ²nÌ²sÌ²uÌ²rÌ²eÌ²mÌ²aÌ²tÌ²hÌ²\boldsymbol{\laâŠ
summary.HTSCluster.Rd:29: Undefined control sequence: \ensuremath in \Ì²eÌ²nÌ²sÌ²uÌ²rÌ²eÌ²mÌ²aÌ²tÌ²hÌ²\boldsymbol{\laâŠ
summary.HTSCluster.Rd:31: Undefined control sequence: \ensuremath in \Ì²eÌ²nÌ²sÌ²uÌ²rÌ²eÌ²mÌ²aÌ²tÌ²hÌ²\boldsymbol{\piâŠ